The PRB-5230 is a right-handed set of RATIO® Calibrated Machine Heads for BASS that use a 2 x 3 configuration. In order to achieve higher gear ratios, Ratio are the world's first machine heads using a double envelope gear design with a hardened steel gear. Amazingly smooth and super strong. Headstock Configuration 2 x 2  Ratio Tuned Machine Heads: The New Standard In Tuning Technology. Gear ratio: unique for each string position - one turn-one tonePeg holes diameter required: 35/64" (14mm)String post diameter: 0.547" (13.9mm)String post length to string hole: 1.030” (26.1mm)Weight per single machine head: 1.86oz (53g)Weight per set of six: 9.3oz (265g)String diameter up to 0.98 gauge (or larger if taper-wound)Includes 5 machine heads, mounting screws, and bushings RATIO® patented gear technologyRATIO® - Calibrated Machine Heads incorporate different string gauges into the tuning equation. From Low E to G - 36:1, 30:1, 20:1, 18:1. We balanced the gear ratios to each string simplifying the tuning process. With RATIO®, a half-turn is a semi-tone! Every string reacts the same to any tuning adjustment. Predictable, precise tuning, on every string. 

Read more less

The PRB-5320 is a right-handed set of RATIO® Calibrated Machine Heads for BASS that use a 3 + 2 configuration. In order to achieve higher gear ratios, Ratio are the world's first machine heads using a double envelope gear design with a hardened steel gear. Amazingly smooth and super strong.  Gear ratio: unique for each string position - one turn-one tonePeg holes diameter required: 35/64" (14mm)String post diameter: 0.547" (13.9mm)String post length to string hole: 1.030” (26.1mm)Weight per single machine head: 1.86oz (53g)Weight per set of six: 9.3oz (265g)String diameter up to 0.98 gauge (or larger if taper-wound)Includes 5 machine heads, mounting screws, and bushings RATIO® patented gear technologyRATIO® - Calibrated Machine Heads incorporate different string gauges into the tuning equation. From Low E to G - 36:1, 30:1, 20:1, 18:1. We balanced the gear ratios to each string simplifying the tuning process. With RATIO®, a half-turn is a semi-tone! Every string reacts the same to any tuning adjustment. Predictable, precise tuning, on every string. 

Read more less

The PRB-6330 is a right-handed set of RATIO® Calibrated Machine Heads for BASS that use a 3 x 3 configuration. In order to achieve higher gear ratios, Ratio are the world's first machine heads using a double envelope gear design with a hardened steel gear. Amazingly smooth and super strong. Gear ratio: unique for each string position - one turn-one tonePeg holes diameter required: 35/64" (14mm)String post diameter: 0.547" (13.9mm)String post length to string hole: 1.030” (26.1mm)Weight per single machine head: 1.86oz (53g)Weight per set of four: 11.16oz (318g)String diameter up to 0.98 gauge (or larger if taper-wound)Includes 6 machine heads, mounting screws, and bushings RATIO® patented gear technologyRATIO® - Calibrated Machine Heads incorporate different string gauges into the tuning equation. From Low E to G - 36:1, 30:1, 20:1, 18:1. We balanced the gear ratios to each string simplifying the tuning process. With RATIO®, a half-turn is a semi-tone! Every string reacts the same to any tuning adjustment. Predictable, precise tuning, on every string. 

Read more less

The PRB-6330 is a right-handed set of RATIO® Calibrated Machine Heads for BASS that use a 3 x 3 configuration. In order to achieve higher gear ratios, Ratio are the world's first machine heads using a double envelope gear design with a hardened steel gear. Amazingly smooth and super strong. Gear ratio: unique for each string position - one turn-one tonePeg holes diameter required: 35/64" (14mm)String post diameter: 0.547" (13.9mm)String post length to string hole: 1.030” (26.1mm)Weight per single machine head: 1.86oz (53g)Weight per set of four: 11.16oz (318g)String diameter up to 0.98 gauge (or larger if taper-wound)Includes 6 machine heads, mounting screws, and bushings RATIO® patented gear technologyRATIO® - Calibrated Machine Heads incorporate different string gauges into the tuning equation. From Low E to G - 36:1, 30:1, 20:1, 18:1. We balanced the gear ratios to each string simplifying the tuning process. With RATIO®, a half-turn is a semi-tone! Every string reacts the same to any tuning adjustment. Predictable, precise tuning, on every string. 

Read more less

The PRB-4401 is a right-handed set of RATIO® Calibrated Machine Heads for BASS that use a 4-in-line configuration. In order to achieve higher gear ratios, Ratio are the world's first machine heads using a double envelope gear design with a hardened steel gear. Amazingly smooth and super strong. Headstock Configuration 4-in-line  Ratio Tuned Machine Heads: The New Standard In Tuning Technology Gear ratio: unique for each string position - one turn-one tonePeg holes diameter required: 0.720" (18mm)String post diameter: 0.547" (13.9mm)String post length to string hole: 0.807” (20.5mm)Weight per single machine head: 3.5oz (99.3g)Weight per set of four: 14oz (397g)String diameter up to 130 gaugeIncludes 4 machine heads, mounting screws and bushings RATIO® patented gear technologyRATIO® - Calibrated Machine Heads incorporate different string gauges into the tuning equation. From Low E to G - 36:1, 30:1, 20:1, 18:1. We balanced the gear ratios to each string simplifying the tuning process. With RATIO®, a half-turn is a semi-tone! Every string reacts the same to any tuning adjustment. Predictable, precise tuning, on every string. 

Read more less

The PRB-4400 is a right-handed set of RATIO® Calibrated Machine Heads for BASS that use a 4-in-line configuration. In order to achieve higher gear ratios, Ratio are the world's first machine heads using a double envelope gear design with a hardened steel gear. Amazingly smooth and super strong. Gear ratio: unique for each string position - one turn-one tonePeg holes diameter required: 35/64" (14mm)String post diameter: 0.547" (13.9mm)String post length to string hole: 1.030” (26.1mm)Weight per single machine head: 1.86oz (53g)Weight per set of four: 7.44oz (212g)String diameter up to 0.98 gauge (or larger if taper-wound)Includes 4 machine heads, mounting screws, and bushings RATIO® patented gear technologyRATIO® - Calibrated Machine Heads incorporate different string gauges into the tuning equation. From Low E to G - 36:1, 30:1, 20:1, 18:1. We balanced the gear ratios to each string simplifying the tuning process. With RATIO®, a half-turn is a semi-tone! Every string reacts the same to any tuning adjustment. Predictable, precise tuning, on every string. 

Read more less

The PRB-5500 is a right-handed set of RATIO® Calibrated Machine Heads for BASS that use a 5-in-line configuration. In order to achieve higher gear ratios, Ratio are the world's first machine heads using a double envelope gear design with a hardened steel gear. Amazingly smooth and super strong. Headstock Configuration 5-in-line  Ratio Tuned Machine Heads: The New Standard In Tuning Technology Gear ratio: unique for each string position - one turn-one tonePeg holes diameter required: 35/64" (14mm)String post diameter: 0.547" (13.9mm)String post length to string hole: 1.030” (26.1mm)Weight per single machine head: 1.86oz (53g)Weight per set of four: 9.3oz (265g)String diameter up to 0.98 gauge (or larger if taper-wound)Includes 5 machine heads, mounting screws, and bushings RATIO® patented gear technologyRATIO® - Calibrated Machine Heads incorporate different string gauges into the tuning equation. From Low E to G - 36:1, 30:1, 20:1, 18:1. We balanced the gear ratios to each string simplifying the tuning process. With RATIO®, a half-turn is a semi-tone! Every string reacts the same to any tuning adjustment. Predictable, precise tuning, on every string. 

Read more less

The PRB-5411 is a right-handed set of RATIO® Calibrated Machine Heads for BASS that use a 4 x 1 configuration.  In order to achieve higher gear ratios, Ratio are the world's first machine heads using a double envelope gear design with a hardened steel gear. Amazingly smooth and super strong. Headstock Configuration 4 x 1  Ratio Tuned Machine Heads: The New Standard In Tuning Technology Gear ratio: unique for each string position - one turn-one tonePeg holes diameter required: 0.720" (18mm)String post diameter: 0.547" (13.9mm)String post length to string hole: 0.807” (20.5mm)Weight per single machine head: 3.5oz (99.3g)Weight per set of four: 17.5oz (497g)String diameter up to 130 gaugeIncludes 5 machine heads, mounting screws and bushings RATIO® patented gear technologyRATIO® - Calibrated Machine Heads incorporate different string gauges into the tuning equation. From Low E to G - 36:1, 30:1, 20:1, 18:1. We balanced the gear ratios to each string simplifying the tuning process. With RATIO®, a half-turn is a semi-tone! Every string reacts the same to any tuning adjustment. Predictable, precise tuning, on every string. 

Read more less

The PRB-4401-LCO is a left-handed set of RATIO® Calibrated Machine Heads for BASS that use a 4-in-line configuration. In order to achieve higher gear ratios, Ratio are the world's first machine heads using a double envelope gear design with a hardened steel gear. Amazingly smooth and super strong. Headstock Configuration 4-in-line  Ratio Tuned Machine Heads: The New Standard In Tuning Technology Gear ratio: unique for each string position - one turn-one tonePeg holes diameter required: 0.720" (18mm)String post diameter: 0.547" (13.9mm)String post length to string hole: 0.807” (20.5mm)Weight per single machine head: 3.5oz (99.3g)Weight per set of four: 14oz (397g)String diameter up to 130 gaugeIncludes 4 machine heads, mounting screws and bushings RATIO® patented gear technologyRATIO® - Calibrated Machine Heads incorporate different string gauges into the tuning equation. From Low E to G - 36:1, 30:1, 20:1, 18:1. We balanced the gear ratios to each string simplifying the tuning process. With RATIO®, a half-turn is a semi-tone! Every string reacts the same to any tuning adjustment. Predictable, precise tuning, on every string. 

Read more less

The PRB-5500 is a right-handed set of RATIO® Calibrated Machine Heads for BASS that use a 5-in-line configuration. In order to achieve higher gear ratios, Ratio are the world's first machine heads using a double envelope gear design with a hardened steel gear. Amazingly smooth and super strong. Headstock Configuration 5-in-line  Ratio Tuned Machine Heads: The New Standard In Tuning Technology Gear ratio: unique for each string position - one turn-one tonePeg holes diameter required: 35/64" (14mm)String post diameter: 0.547" (13.9mm)String post length to string hole: 1.030” (26.1mm)Weight per single machine head: 1.86oz (53g)Weight per set of four: 9.3oz (265g)String diameter up to 0.98 gauge (or larger if taper-wound)Includes 5 machine heads, mounting screws, and bushings RATIO® patented gear technologyRATIO® - Calibrated Machine Heads incorporate different string gauges into the tuning equation. From Low E to G - 36:1, 30:1, 20:1, 18:1. We balanced the gear ratios to each string simplifying the tuning process. With RATIO®, a half-turn is a semi-tone! Every string reacts the same to any tuning adjustment. Predictable, precise tuning, on every string. 

Read more less

The PRB-5500 is a right-handed set of RATIO® Calibrated Machine Heads for BASS that use a 5-in-line configuration. In order to achieve higher gear ratios, Ratio are the world's first machine heads using a double envelope gear design with a hardened steel gear. Amazingly smooth and super strong. Headstock Configuration 2 x 2  Ratio Tuned Machine Heads: The New Standard In Tuning Technology. Gear ratio: unique for each string position - one turn-one tonePeg holes diameter required: 35/64" (14mm)String post diameter: 0.547" (13.9mm)String post length to string hole: 1.030” (26.1mm)Weight per single machine head: 1.86oz (53g)Weight per set of four: 9.3oz (265g)String diameter up to 0.98 gauge (or larger if taper-wound)Includes 5 machine heads, mounting screws, and bushings RATIO® patented gear technologyRATIO® - Calibrated Machine Heads incorporate different string gauges into the tuning equation. From Low E to G - 36:1, 30:1, 20:1, 18:1. We balanced the gear ratios to each string simplifying the tuning process. With RATIO®, a half-turn is a semi-tone! Every string reacts the same to any tuning adjustment. Predictable, precise tuning, on every string. 

Read more less

The PRB-4400 is a right-handed set of RATIO® Calibrated Machine Heads for BASS that use a 4-in-line configuration. In order to achieve higher gear ratios, Ratio are the world's first machine heads using a double envelope gear design with a hardened steel gear. Amazingly smooth and super strong. Gear ratio: unique for each string position - one turn-one tonePeg holes diameter required: 35/64" (14mm)String post diameter: 0.547" (13.9mm)String post length to string hole: 1.030” (26.1mm)Weight per single machine head: 1.86oz (53g)Weight per set of four: 7.44oz (212g)String diameter up to 0.98 gauge (or larger if taper-wound)Includes 4 machine heads, mounting screws, and bushings RATIO® patented gear technologyRATIO® - Calibrated Machine Heads incorporate different string gauges into the tuning equation. From Low E to G - 36:1, 30:1, 20:1, 18:1. We balanced the gear ratios to each string simplifying the tuning process. With RATIO®, a half-turn is a semi-tone! Every string reacts the same to any tuning adjustment. Predictable, precise tuning, on every string. 

Read more less

The PRN-2341 are right-handed sets of RATIO® Calibrated Machine Heads for electric guitars that use 3 + 3 tuners. It has a two-pin casing that can be used as is, or with our Patented InvisoMatch Mounting Plates [opens in new tab]. 4 different sets of InvisoMatch mounting plates in brushed aluminum are included to make installation on most guitars fast and accurate by using your existing screw mounting holes. Gear ratio: unique for each string position - one turn-one tonePeg holes diameter required: 13/32" (10mm)String post diameter: 0.236" (6mm)String post length to string hole: 0.910” (23mm)Weight per single machine head: 0.066lbs (30g)Weight per set of six: 0.393lbs (179g)String diameter up to 72 gaugeIncludes 6 machine heads, mounting screws and bushingsIncludes complimentary 4 sets of aluminum mounting plates

Read more less

The PRN-2341 are right-handed sets of RATIO® Calibrated Machine Heads for electric guitars that use 3 + 3 tuners. It has a two-pin casing that can be used as is, or with our Patented InvisoMatch Mounting Plates [opens in new tab]. 4 different sets of InvisoMatch mounting plates in brushed aluminum are included to make installation on most guitars fast and accurate by using your existing screw mounting holes. Gear ratio: unique for each string position - one turn-one tonePeg holes diameter required: 13/32" (10mm)String post diameter: 0.236" (6mm)String post length to string hole: 0.910” (23mm)Weight per single machine head: 0.066lbs (30g)Weight per set of six: 0.393lbs (179g)String diameter up to 72 gaugeIncludes 6 machine heads, mounting screws and bushingsIncludes complimentary 4 sets of aluminum mounting plates

Read more less

The PRN-2341 are right-handed sets of RATIO® Calibrated Machine Heads for electric guitars that use 3 + 3 tuners. It has a two-pin casing that can be used as is, or with our Patented InvisoMatch Mounting Plates [opens in new tab]. 4 different sets of InvisoMatch mounting plates in brushed aluminum are included to make installation on most guitars fast and accurate by using your existing screw mounting holes. Gear ratio: unique for each string position - one turn-one tonePeg holes diameter required: 13/32" (10mm)String post diameter: 0.236" (6mm)String post length to string hole: 0.910” (23mm)Weight per single machine head: 0.066lbs (30g)Weight per set of six: 0.393lbs (179g)String diameter up to 72 gaugeIncludes 6 machine heads, mounting screws and bushingsIncludes complimentary 4 sets of aluminum mounting plates

Read more less

The PRN-2341 are right-handed sets of RATIO® Calibrated Machine Heads for electric guitars that use 3 + 3 tuners. It has a two-pin casing that can be used as is, or with our Patented InvisoMatch Mounting Plates [opens in new tab]. 4 different sets of InvisoMatch mounting plates in brushed aluminum are included to make installation on most guitars fast and accurate by using your existing screw mounting holes. Gear ratio: unique for each string position - one turn-one tonePeg holes diameter required: 13/32" (10mm)String post diameter: 0.236" (6mm)String post length to string hole: 0.910” (23mm)Weight per single machine head: 0.066lbs (30g)Weight per set of six: 0.393lbs (179g)String diameter up to 72 gaugeIncludes 6 machine heads, mounting screws and bushingsIncludes complimentary 4 sets of aluminum mounting plates

Read more less

The PRN-4424 are the right-handed sets of open RATIO® Calibrated Machine Heads in a retro look for electric guitars that use 3+3 side tuners. Fit vintage-style guitars. Please note that GraphTech retro tuners are made to a vintage specification (for 11/32” peghead holes) and will not be a direct replacement for a modern tuner. Please check the specifications below. Gear ratio: unique for each string position - one turn-one tonePeg holes diameter required: 0.346" (8.8mm)String post diameter: 0.236" (6mm)String post length to string hole: 0.827” (21mm)Weight per single machine head: 0.056lbs (25.5g)Weight per set of six: 0.337lbs (153g)String diameter up to 72 gaugeIncludes 6 machine heads, mounting screws and bushings

Read more less

The PRN-3424 is the right-handed set of open RATIO® Calibrated Machine Heads for electric guitars that use 3+3 side tuners. Please note that GraphTech retro tuners are made to a vintage specification (for 11/32” peghead holes) and will not be a direct replacement for a modern tuner. Please check the specifications below. Gear ratio: unique for each string position - one turn-one tonePeg holes diameter required: 0.346" (8.8mm)String post diameter: 0.236" (6mm)String post length to string hole: 0.827” (21mm)Weight per single machine head: 0.055lbs (25g)Weight per set of six: 0.331lbs (150g)String diameter up to 72 gaugeIncludes 6 machine heads, mounting screws and bushings

Read more less

The PRN-4624 is a right-handed set of open RATIO® Calibrated Machine Heads in a retro look for electric guitars that use 6-in-line tuners. Fits vintage style guitars (e.g. Fender Style). Please note that GraphTech retro tuners are made to a vintage specification (for 11/32” peghead holes) and will not be a direct replacement for a modern tuner. Please check the specifications below. Gear ratio: unique for each string position - one turn-one tonePeg holes diameter required: 0.346" (8.8mm)String post diameter: 0.236" (6mm)String post length to string hole: 0.827” (21mm)Weight per single machine head: 0.056lbs (25.5g)Weight per set of six: 0.337lbs (153g)String diameter up to 72 gaugeIncludes 6 machine heads, mounting screws and bushings

Read more less

The PRL-8331 are right-handed sets of Locking RATIO® Calibrated Machine Heads for electric guitars that use 3 + 3 tuners, such as Gibson style and PRS style guitars. A great upgrade over single-gear machine heads, such as Grover, Schaller, Sperzel, Kluson, etc. It has a two-pin casing that can be used as is, or with our Patented InvisoMatch Mounting Plates [opens in new tab]. 4 different sets of InvisoMatch mounting plates in brushed aluminum are included to make installation on most guitars fast and accurate by using your existing screw mounting holes. Gear ratio: unique for each string position - one turn-one tonePeg holes diameter required: 13/32" (10mm)String post diameter: 0.236" (6mm)String post length to string hole: 0.910” (23mm)Weight per single machine head: 0.083lbs (38g)Weight per set of six: 0.496lbs (225g)String diameter up to 72 gaugeIncludes 6 machine heads, mounting screws and bushingsIncludes complimentary 4 sets of aluminum mounting plates RATIO® patented gear technologyRATIO® - Calibrated Machine Heads incorporate different string gauges into the tuning equation. From Low E to High E 39:1, 24:1, 20:1, 35:1, 20:1, 12:1. We balanced the gear ratios to each string simplifying the tuning process. With RATIO®, a half-turn is a semi-tone! Every string reacts the same to any tuning adjustment. Predictable, precise tuning, on every string.

Read more less

The PRL-8341 is a left-handed set of Locking RATIO® Calibrated Machine Heads for electric guitars that use 3 + 3 tuners, such as Gibson style and PRS style guitars. A great upgrade over single-gear machine heads, such as Grover, Schaller, Sperzel, Kluson, etc. Probably the easiest machine heads to retrofit using the Invisomatch Mounting Plates which allows you to use your existing screw holes. It has a two-pin casing that can be used as is, or with our Patented InvisoMatch Mounting Plates. 4 different sets of InvisoMatch mounting plates in brushed aluminum are included to make installation on most guitars fast and accurate by using your existing screw mounting holes. Gear ratio: unique for each string position - one turn-one tonePeg holes diameter required: 13/32" (10mm)String post diameter: 0.236" (6mm)String post length to string hole: 0.910” (23mm)Weight per single machine head: 0.083lbs (38g)Weight per set of six: 0.496lbs (225g)String diameter up to 72 gaugeIncludes 6 machine heads, mounting screws and bushingsIncludes complimentary 4 sets of aluminum mounting plates

Read more less

The PRL-8341 is a left-handed set of Locking RATIO® Calibrated Machine Heads for electric guitars that use 3 + 3 tuners, such as Gibson style and PRS style guitars. A great upgrade over single-gear machine heads, such as Grover, Schaller, Sperzel, Kluson, etc. Probably the easiest machine heads to retrofit using the Invisomatch Mounting Plates which allows you to use your existing screw holes. It has a two-pin casing that can be used as is, or with our Patented InvisoMatch Mounting Plates. 4 different sets of InvisoMatch mounting plates in brushed aluminum are included to make installation on most guitars fast and accurate by using your existing screw mounting holes. Gear ratio: unique for each string position - one turn-one tonePeg holes diameter required: 13/32" (10mm)String post diameter: 0.236" (6mm)String post length to string hole: 0.910” (23mm)Weight per single machine head: 0.083lbs (38g)Weight per set of six: 0.496lbs (225g)String diameter up to 72 gaugeIncludes 6 machine heads, mounting screws and bushingsIncludes complimentary 4 sets of aluminum mounting plates

Read more less

The PRL-8621 is a right-handed set of Locking RATIO® Calibrated Machine Heads for electric guitars that use a 3 x 4 tuner configuration. Fits many Jackson, Schecter, and Ibanez (selected) style guitars and a lot of acoustic guitars if you want to upgrade to a locking set of machine heads. It has a two-pin casing that can be used as is, or with our Patented InvisoMatch Mounting Plates [opens in new tab]. 4 different sets of InvisoMatch mounting plates in brushed aluminum are included to make installation on most guitars fast and accurate by using your existing screw mounting holes. Gear ratio: unique for each string position - one turn-one tonePeg holes diameter required: 13/32" (10mm)String post diameter: 0.236" (6mm)String post length to string hole: 0.910” (23mm)Weight per single machine head: 0.083lbs (38g)Weight per set: 0.581lbs (266g)String diameter up to 72 gaugeIncludes 7 machine heads, mounting screws and bushingsIncludes complimentary 4 sets of aluminum mounting plates

Read more less

The PRL-8621 is a right-handed set of Locking RATIO® Calibrated Machine Heads for electric guitars that use a 3 + 4 tuner configuration. Fits many Jackson, Schecter, and Ibanez (selected) style guitars and a lot of acoustic guitars if you want to upgrade to a locking set of machine heads. It has a two-pin casing that can be used as is, or with our Patented InvisoMatch Mounting Plates [opens in new tab]. 4 different sets of InvisoMatch mounting plates in brushed aluminum are included to make installation on most guitars fast and accurate by using your existing screw mounting holes. Gear ratio: unique for each string position - one turn-one tonePeg holes diameter required: 13/32" (10mm)String post diameter: 0.236" (6mm)String post length to string hole: 0.910” (23mm)Weight per single machine head: 0.083lbs (38g)Weight per set: 0.581lbs (266g)String diameter up to 72 gaugeIncludes 7 machine heads, mounting screws and bushingsIncludes complimentary 4 sets of aluminum mounting plates

Read more less

The PRL-8621 is a right-handed set of Locking RATIO® Calibrated Machine Heads for electric guitars that use a 3 x 4 tuner configuration. Fits many Jackson, Schecter, and Ibanez (selected) style guitars and a lot of acoustic guitars if you want to upgrade to a locking set of machine heads. It has a two-pin casing that can be used as is, or with our Patented InvisoMatch Mounting Plates [opens in new tab]. 4 different sets of InvisoMatch mounting plates in brushed aluminum are included to make installation on most guitars fast and accurate by using your existing screw mounting holes. Gear ratio: unique for each string position - one turn-one tonePeg holes diameter required: 13/32" (10mm)String post diameter: 0.236" (6mm)String post length to string hole: 0.910” (23mm)Weight per single machine head: 0.083lbs (38g)Weight per set: 0.581lbs (266g)String diameter up to 72 gaugeIncludes 7 machine heads, mounting screws and bushingsIncludes complimentary 4 sets of aluminum mounting plates

Read more less

The PRL-8311 is a left-handed set of Locking RATIO® Calibrated Machine Heads for electric guitars that use 3 x 3 tuners. It has a two-pin casing that can be used as is, or with our Patented InvisoMatch Mounting Plates. 4 different sets of InvisoMatch mounting plates in brushed aluminum are included to make installation on most guitars fast and accurate by using your existing screw mounting holes. Gear ratio: unique for each string position - one turn-one tonePeg holes diameter required: 13/32" (10mm)String post diameter: 0.236" (6mm)String post length to string hole: 0.910” (23mm)Weight per single machine head: 0.083lbs (38g)Weight per set of six: 0.496lbs (225g)String diameter up to 72 gaugeIncludes 6 machine heads, mounting screws and bushingsIncludes complimentary 4 sets of aluminum mounting plates RATIO® patented gear technologyRATIO® - Calibrated Machine Heads incorporate different string gauges into the tuning equation. From Low E to High E 39:1, 24:1, 20:1, 35:1, 20:1, 12:1. We balanced the gear ratios to each string simplifying the tuning process. With RATIO®, a half-turn is a semi-tone! Every string reacts the same to any tuning adjustment. Predictable, precise tuning, on every string.

Read more less

The PRL-8311 is a left-handed set of Locking RATIO® Calibrated Machine Heads for electric guitars that use 3 x 3 tuners. It has a two-pin casing that can be used as is, or with our Patented InvisoMatch Mounting Plates. 4 different sets of InvisoMatch mounting plates in brushed aluminum are included to make installation on most guitars fast and accurate by using your existing screw mounting holes. Gear ratio: unique for each string position - one turn-one tonePeg holes diameter required: 13/32" (10mm)String post diameter: 0.236" (6mm)String post length to string hole: 0.910” (23mm)Weight per single machine head: 0.083lbs (38g)Weight per set of six: 0.496lbs (225g)String diameter up to 72 gaugeIncludes 6 machine heads, mounting screws and bushingsIncludes complimentary 4 sets of aluminum mounting plates RATIO® patented gear technologyRATIO® - Calibrated Machine Heads incorporate different string gauges into the tuning equation. From Low E to High E 39:1, 24:1, 20:1, 35:1, 20:1, 12:1. We balanced the gear ratios to each string simplifying the tuning process. With RATIO®, a half-turn is a semi-tone! Every string reacts the same to any tuning adjustment. Predictable, precise tuning, on every string.

Read more less

The PRL-8322 are right-handed sets of Locking RATIO® Calibrated Machine Heads for electric guitars that use 3 x 3 tuners, such as Gibson style and PRS style guitars. It has a two-pin casing that can be used as is, or with our Patented InvisoMatch Mounting Plates. Gear ratio: unique for each string position - one turn-one tonePeg holes diameter required: 13/32" (10mm)String post diameter: 0.236" (6mm)String post length to string hole: 0.910” (23mm)Weight per single machine head: 0.083lbs (38g)Weight per set of six: 0.496lbs (225g)String diameter up to 72 gaugeIncludes 6 machine heads, mounting screws and bushingsIncludes complimentary 4 sets of aluminum mounting plates RATIO® patented gear technologyRATIO® - Calibrated Machine Heads incorporate different string gauges into the tuning equation. From Low E to High E 39:1, 24:1, 20:1, 35:1, 20:1, 12:1. We balanced the gear ratios to each string simplifying the tuning process. With RATIO®, a half-turn is a semi-tone! Every string reacts the same to any tuning adjustment. Predictable, precise tuning, on every string.

Read more less

The PRL-8322 are right-handed sets of Locking RATIO® Calibrated Machine Heads for electric guitars that use 3 x 3 tuners, such as Gibson style and PRS style guitars. It has a two-pin casing that can be used as is, or with our Patented InvisoMatch Mounting Plates [opens in new tab]. Gear ratio: unique for each string position - one turn-one tonePeg holes diameter required: 13/32" (10mm)String post diameter: 0.236" (6mm)String post length to string hole: 0.910” (23mm)Weight per single machine head: 0.083lbs (38g)Weight per set of six: 0.496lbs (225g)String diameter up to 72 gaugeIncludes 6 machine heads, mounting screws and bushingsIncludes complimentary 4 sets of aluminum mounting plates RATIO® patented gear technologyRATIO® - Calibrated Machine Heads incorporate different string gauges into the tuning equation. From Low E to High E 39:1, 24:1, 20:1, 35:1, 20:1, 12:1. We balanced the gear ratios to each string simplifying the tuning process. With RATIO®, a half-turn is a semi-tone! Every string reacts the same to any tuning adjustment. Predictable, precise tuning, on every string.

Read more less

The PRL-8322 are right-handed sets of Locking RATIO® Calibrated Machine Heads for electric guitars that use 3 x 3 tuners, such as Gibson style and PRS style guitars. It has a two-pin casing that can be used as is, or with our Patented InvisoMatch Mounting Plates. Gear ratio: unique for each string position - one turn-one tonePeg holes diameter required: 13/32" (10mm)String post diameter: 0.236" (6mm)String post length to string hole: 0.910” (23mm)Weight per single machine head: 0.083lbs (38g)Weight per set of six: 0.496lbs (225g)String diameter up to 72 gaugeIncludes 6 machine heads, mounting screws and bushingsIncludes complimentary 4 sets of aluminum mounting plates RATIO® patented gear technologyRATIO® - Calibrated Machine Heads incorporate different string gauges into the tuning equation. From Low E to High E 39:1, 24:1, 20:1, 35:1, 20:1, 12:1. We balanced the gear ratios to each string simplifying the tuning process. With RATIO®, a half-turn is a semi-tone! Every string reacts the same to any tuning adjustment. Predictable, precise tuning, on every string.

Read more less

The PRL-8421 is a right-handed set of Locking RATIO® Calibrated Machine Heads for a Music Man, or other 4 x 2 style headstock.It has a mini contemporary button.It has a two-pin casing that can be used as is, or with our Patented InvisoMatch Mounting Plates.4 different sets of InvisoMatch mounting plates in brushed aluminium are included to make installation on most guitars fast and accurate by using your existing screw mounting holes.Gear ratio: unique for each string position - one turn-one tonePeg holes diameter required: 10mm (13/32")String post diameter: 6mm (0.236")String post length to string hole: 23mm (0.910”)Weight per single machine head: 38g (0.083lbs)Weight per set: 225g (0.496lbs)String diameter up to 72 gaugeIncludes 6 machine heads, mounting screws and bushingsIncludes complimentary 4 sets of aluminium mounting plates RATIO® patented gear technologyRATIO® - Calibrated Machine Heads incorporate different string gauges into the tuning equation.From Low E to High E 39:1, 24:1, 20:1, 35:1, 20:1, 12:1.We balanced the gear ratios to each string simplifying the tuning process.With RATIO®, a half-turn is a semi-tone!Every string reacts the same to any tuning adjustment. Predictable, precise tuning, on every string.

Read more less

The PRL-8421 is a right-handed set of Locking RATIO® Calibrated Machine Heads for a Music Man, or other 4 x 2 style headstock.It has a mini contemporary button.It has a two-pin casing that can be used as is, or with our Patented InvisoMatch Mounting Plates.4 different sets of InvisoMatch mounting plates in brushed aluminium are included to make installation on most guitars fast and accurate by using your existing screw mounting holes.Gear ratio: unique for each string position - one turn-one tonePeg holes diameter required: 10mm  /  13/32"String post diameter: 6mm  /  0.236"String post length to string hole: 23mm  /  0.910”Weight per single machine head: 38g  /  0.083lbsWeight per set: 225g  /  0.496lbsString diameter up to 72 gaugeIncludes 6 machine heads, mounting screws and bushingsIncludes complimentary 4 sets of aluminium mounting platesRATIO® patented gear technologyRATIO® - Calibrated Machine Heads incorporate different string gauges into the tuning equation.From Low E to High E 39:1, 24:1, 20:1, 35:1, 20:1, 12:1.We balanced the gear ratios to each string simplifying the tuning process.With RATIO®, a half-turn is a semi-tone!Every string reacts the same to any tuning adjustment. Predictable, precise tuning, on every string.

Read more less

The PRL-8421 is a right-handed set of Locking RATIO® Calibrated Machine Heads for a Music Man, or other 4 + 2 style headstock.It has a mini contemporary button.It has a two-pin casing that can be used as is, or with our Patented InvisoMatch Mounting Plates.4 different sets of InvisoMatch mounting plates in brushed aluminium are included to make installation on most guitars fast and accurate by using your existing screw mounting holes.Gear ratio: unique for each string position - one turn-one tonePeg holes diameter required: 10mm  /  13/32")String post diameter: 6mm  /  0.236"String post length to string hole: 23mm  /  0.910”Weight per single machine head: 38g  /  0.083lbsWeight per set: 225g  /  0.496lbs  String diameter up to 72 gaugeIncludes 6 machine heads, mounting screws and bushingsIncludes complimentary 4 sets of aluminium mounting plates RATIO® patented gear technologyRATIO® - Calibrated Machine Heads incorporate different string gauges into the tuning equation.From Low E to High E 39:1, 24:1, 20:1, 35:1, 20:1, 12:1.We balanced the gear ratios to each string simplifying the tuning process.With RATIO®, a half-turn is a semi-tone!Every string reacts the same to any tuning adjustment. Predictable, precise tuning, on every string.

Read more less

The PRL-8421-LB0 is a left-handed set of Locking RATIO® Calibrated Machine Heads for a Music Man, or other 4 x 2 style headstock.It has a mini contemporary button.It has a two-pin casing that can be used as is, or with our Patented InvisoMatch Mounting Plates.4 different sets of InvisoMatch mounting plates in brushed aluminium are included to make installation on most guitars fast and accurate by using your existing screw mounting holes.Gear ratio: unique for each string position - one turn-one tonePeg holes diameter required: 10mm (13/32")String post diameter: 6mm (0.236")String post length to string hole: 23mm (0.910”)Weight per single machine head: 38g (0.083lbs)Weight per set: 225g (0.496lbs)String diameter up to 72 gaugeIncludes 6 machine heads, mounting screws and bushingsIncludes complimentary 4 sets of aluminium mounting platesWeight per set of six: 225g (0.496lbs)String diameter up to 72 gaugeIncludes 6 machine heads, mounting screws and bushingsIncludes complimentary 4 sets of aluminium mounting plates RATIO® patented gear technologyRATIO® - Calibrated Machine Heads incorporate different string gauges into the tuning equation.From Low E to High E 39:1, 24:1, 20:1, 35:1, 20:1, 12:1.We balanced the gear ratios to each string simplifying the tuning process.With RATIO®, a half-turn is a semi-tone!Every string reacts the same to any tuning adjustment. Predictable, precise tuning, on every string.

Read more less

The PRL-8521 is a right-handed set of Locking RATIO® Calibrated Machine Heads for electric guitars that uses a 4 x 3 tuner configuration. Fits many Gibson/Epiphone, PRS-style guitars, and any other guitar with a 4+3 headstock. It has a two-pin casing that can be used as is, or with our Patented InvisoMatch Mounting Plates [opens in new tab]. 4 different sets of InvisoMatch mounting plates in brushed aluminum are included to make installation on most guitars fast and accurate by using your existing screw mounting holes. Gear ratio: unique for each string position - one turn-one tonePeg holes diameter required: 13/32" (10mm)String post diameter: 0.236" (6mm)String post length to string hole: 0.910” (23mm)Weight per single machine head: 0.083lbs (38g)Weight per set: 0.581lbs (266g)String diameter up to 72 gauge RATIO® patented gear technologyRATIO® - Calibrated Machine Heads incorporate different string gauges into the tuning equation. From Low B to High E 48:1, 39:1, 24:1, 20:1, 35:1, 20:1, 12:1. We balanced the gear ratios to each string simplifying the tuning process. With RATIO®, a half-turn is a semi-tone! Every string reacts the same to any tuning adjustment. Predictable, precise tuning, on every string. Includes 7 machine heads, mounting screws, and bushingsIncludes complimentary 4 sets of aluminum mounting plates.

Read more less

The PRL-8521 is a right-handed set of Locking RATIO® Calibrated Machine Heads for electric guitars that uses a 4 x 3 tuner configuration. Fits many Gibson/Epiphone, PRS-style guitars, and any other guitar with a 4+3 headstock.It has a two-pin casing that can be used as is, or with our Patented InvisoMatch Mounting Plates.4 different sets of InvisoMatch mounting plates in brushed aluminium are included to make installation on most guitars fast and accurate by using your existing screw mounting holes.Gear ratio: unique for each string position - one turn-one tonePeg holes diameter required: 10mm (13/32")String post diameter: 6mm (0.236")String post length to string hole: 23mm (0.910”)Weight per single machine head: 38g (0.083lbs)Weight per set: 266g (0.581lbs)String diameter up to 72 gaugeIncludes 7 machine heads, mounting screws, and bushingsIncludes complimentary 4 sets of aluminium mounting platesRATIO® patented gear technology 
RATIO® - Calibrated Machine Heads incorporate different string gauges into the tuning equation.From Low B to High E 48:1, 39:1, 24:1, 20:1, 35:1, 20:1, 12:1.We balanced the gear ratios to each string simplifying the tuning process.With RATIO®, a half-turn is a semi-tone!Every string reacts the same to any tuning adjustment. Predictable, precise tuning, on every string.

Read more less

RATIO® patented gear technology
RATIO® - Calibrated Machine Heads incorporate different string gauges into the tuning equation.From Low B to High E 48:1, 39:1, 24:1, 20:1, 35:1, 20:1, 12:1.We balanced the gear ratios to each string simplifying the tuning process.With RATIO®, a half-turn is a semi-tone!Every string reacts the same to any tuning adjustment. Predictable, precise tuning, on every string.It has a two-pin casing that can be used as is, or with our Patented InvisoMatch Mounting Plates.4 different sets of InvisoMatch mounting plates in brushed aluminium are included to make installation on most guitars fast and accurate by using your existing screw mounting holes.Gear ratio: unique for each string position - one turn-one tonePeg holes diameter required: 10mm (13/32")String post diameter: 6mm (0.236")String post length to string hole: 23mm (0.910”)Weight per single machine head: 38g (0.083lbs)Weight per set: 266g (0.581lbs)String diameter up to 72 gaugeIncludes 7 machine heads, mounting screws, and bushingsIncludes complimentary 4 sets of aluminium mounting plates

Read more less

Ratio Tuned Machine Heads ~ Electric 6 in-line / 2 Pin Classic ~ OffsetRatio - Tuned Machine Heads are the first and only machine head to incorporate the different string gauges into the tuning equation. We balanced the individual gear ratios to each string dramatically simplified the tuning process. No more overshooting the G string or twisting away on the high E string. With Ratio, each half key turn equals one semitone change on all strings! Quicker, more accurate tuning on every string.

Read more less

Ratio Tuned Machine Heads ~ Electric 6 in-line / 2 Pin Mini Contemporary ~ OffsetRatio - Tuned Machine Heads are the first and only machine head to incorporate the different string gauges into the tuning equation. We balanced the individual gear ratios to each string dramatically simplified the tuning process. No more overshooting the G string or twisting away on the high E string. With Ratio, each half key turn equals one semitone change on all strings! Quicker, more accurate tuning on every string.

Read more less

Ratio Tuned Machine Heads ~ Electric 6 in-line / 2 Pin Classic ~ OffsetRatio - Tuned Machine Heads are the first and only machine head to incorporate the different string gauges into the tuning equation. We balanced the individual gear ratios to each string dramatically simplified the tuning process. No more overshooting the G string or twisting away on the high E string. With Ratio, each half key turn equals one semitone change on all strings! Quicker, more accurate tuning on every string.

Read more less

Ratio Tuned Machine Heads ~ Electric 6 in-line / 2 Pin Classic ~ OffsetRatio - Tuned Machine Heads are the first and only machine head to incorporate the different string gauges into the tuning equation. We balanced the individual gear ratios to each string dramatically simplified the tuning process. No more overshooting the G string or twisting away on the high E string. With Ratio, each half key turn equals one semitone change on all strings! Quicker, more accurate tuning on every string.

Read more less

Ratio Tuned Machine Heads ~ Electric 6 in-line / 2 Pin Classic ~ OffsetRatio - Tuned Machine Heads are the first and only machine head to incorporate the different string gauges into the tuning equation. We balanced the individual gear ratios to each string dramatically simplified the tuning process. No more overshooting the G string or twisting away on the high E string. With Ratio, each half key turn equals one semitone change on all strings! Quicker, more accurate tuning on every string.

Read more less

Ratio Tuned Machine Heads ~ Electric 6 in-line / 2 Pin Mini Contemporary ~ OffsetRatio - Tuned Machine Heads are the first and only machine head to incorporate the different string gauges into the tuning equation. We balanced the individual gear ratios to each string dramatically simplified the tuning process. No more overshooting the G string or twisting away on the high E string. With Ratio, each half key turn equals one semitone change on all strings! Quicker, more accurate tuning on every string.

Read more less

Ratio Tuned Machine Heads ~ Electric 6 in-line / 2 Pin Classic ~ OffsetRatio - Tuned Machine Heads are the first and only machine head to incorporate the different string gauges into the tuning equation. We balanced the individual gear ratios to each string dramatically simplified the tuning process. No more overshooting the G string or twisting away on the high E string. With Ratio, each half key turn equals one semitone change on all strings! Quicker, more accurate tuning on every string.

Read more less

Ratio Tuned Machine Heads ~ Electric 6 in-line / 2 Pin Classic ~ OffsetRatio - Tuned Machine Heads are the first and only machine head to incorporate the different string gauges into the tuning equation. We balanced the individual gear ratios to each string dramatically simplified the tuning process. No more overshooting the G string or twisting away on the high E string. With Ratio, each half key turn equals one semitone change on all strings! Quicker, more accurate tuning on every string.

Read more less

Ratio Tuned Machine Heads ~ Electric 6 in-line / 2 Pin Mini Contemporary ~ OffsetRatio - Tuned Machine Heads are the first and only machine head to incorporate the different string gauges into the tuning equation. We balanced the individual gear ratios to each string dramatically simplified the tuning process. No more overshooting the G string or twisting away on the high E string. With Ratio, each half key turn equals one semitone change on all strings! Quicker, more accurate tuning on every string.

Read more less