3 treble and 3 bass, set of 6. The 109 Series 3-step button gives these machine heads a distinctive look and sets them apart from other Rotomatics®. The housing provides a maximum bearing for worm, gear and string post. Gear ratio is 14:1. Worm and gear are precision-cut for perfect meshing. eliminating backlash and slippage. Countersunk tension screw permits player to regulate turning tension to any degree. Enclosed gear box with special lubricant for a lifetime of trouble-free service. Sealed-in, lubricated gears14:1 gear ratio25/64” post holePost length to hole: 23mmOverall post length: 28.2mmWeight per pc/per set: 1.6oz/9.6ozMax. string gauge: .074”Hardware included (bushings, washers, screws)Drop-in replacement for:• 102-18 Series• 102V Series• 103 Series• 106 Series• 109-18 Series• 135 Series (Top mounting hole will be visible)• 136 Series (Top mounting hole will be visible)• 502 Series• 509 Series   For detailed specifications and/or fitting guides please locate this item on the Grover website where they offer more information.

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3 treble and 3 bass, set of 6. The 109 Series 3-step button gives these machine heads a distinctive look and sets them apart from other Rotomatics®. The housing provides a maximum bearing for worm, gear and string post. Gear ratio is 14:1. Worm and gear are precision-cut for perfect meshing. eliminating backlash and slippage. Countersunk tension screw permits player to regulate turning tension to any degree. Enclosed gear box with special lubricant for a lifetime of trouble-free service. Sealed-in, lubricated gears14:1 gear ratio25/64” post holePost length to hole: 23mmOverall post length: 28.2mmWeight per pc/per set: 1.6oz/9.6ozMax. string gauge: .074”Hardware included (bushings, washers, screws)Drop-in replacement for:• 102-18 Series• 102V Series• 103 Series• 106 Series• 109-18 Series• 135 Series (Top mounting hole will be visible)• 136 Series (Top mounting hole will be visible)• 502 Series• 509 Series For detailed specifications and/or fitting guides please locate this item on the Grover website where they offer more information.

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3 treble and 3 bass, set of 6. Our Vintage machine uses a die-cast, two-piece housing for additional strength and precision. The unique bearing surface in the housing provides a rigid string post enhancing the alignment of the gear and worm. The 14 to 1 gear ratio provides for fine tuning. For detailed specifications and/or fitting guides please locate this item on the Grover website where they offer more information.

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Set of 4. Precision and durability with classic styling make this bass machine heads ideal for manufacturing or upgrading instruments. The die-cast housing is a sturdy foundation for maintaining the center lines of the worm and gear. A fixed bearing surface in the housing creates a smooth tuning surface for easy tuning. The safety string post and “elephant ear” button provide utility and a vintage look. Bushings and wood screws included. 22:1 gear ratio. For detailed specifications and/or fitting guides please locate this item on the Grover website where they offer more information.

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Set of 4. Precision and durability with classic styling make this bass machine heads ideal for manufacturing or upgrading instruments. The die-cast housing is a sturdy foundation for maintaining the center lines of the worm and gear. A fixed bearing surface in the housing creates a smooth tuning surface for easy tuning. The safety string post and “elephant ear” button provide utility and a vintage look. Bushings and wood screws included. 22:1 gear ratio. For detailed specifications and/or fitting guides please locate this item on the Grover website where they offer more information.

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2 Treble, 2 Bass. The Grover® “MINI” is lightweight, compact and durable for modern electric basses. Gear ratio is 20 to 1. Housing is specially machined to achieve the precise tolerance that prevents slippage and allows fine tuning. Sealed gear box has permanent lubrication that makes the MINI friction-free for life. Individually hand-tested. Screws and bushings included.

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4-in-line. The Grover® “MINI” is lightweight, compact and durable for modern electric basses. Gear ratio is 20 to 1. Housing is specially machined to achieve the precise tolerance that prevents slippage and allows fine tuning. Sealed gear box has permanent lubrication that makes the MINI friction-free for life. Individually hand-tested. Screws and bushings included.

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Left hand model. The Grover® “MINI” is lightweight, compact and durable for modern electric basses. Gear ratio is 20 to 1. Housing is specially machined to achieve the precise tolerance that prevents slippage and allows fine tuning. Sealed gear box has permanent lubrication that makes the MINI friction-free for life. Individually hand-tested. Screws and bushings included.

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2 Treble, 2 Bass. The Grover® “MINI” is lightweight, compact and durable for modern electric basses. Gear ratio is 20 to 1. Housing is specially machined to achieve the precise tolerance that prevents slippage and allows fine tuning. Sealed gear box has permanent lubrication that makes the MINI friction-free for life. Individually hand-tested. Screws and bushings included.

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Left hand model. The Grover® “MINI” is lightweight, compact and durable for modern electric basses. Gear ratio is 20 to 1. Housing is specially machined to achieve the precise tolerance that prevents slippage and allows fine tuning. Sealed gear box has permanent lubrication that makes the MINI friction-free for life. Individually hand-tested. Screws and bushings included. For detailed specifications and/or fitting guides please locate this item on the Grover website where they offer more detailed information.

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2 Treble, 2 Bass. The Grover® “MINI” is lightweight, compact and durable for modern electric basses. Gear ratio is 20 to 1. Housing is specially machined to achieve the precise tolerance that prevents slippage and allows fine tuning. Sealed gear box has permanent lubrication that makes the MINI friction-free for life. Individually hand-tested. Screws and bushings included. For detailed specifications and/or fitting guides please locate this item on the Grover website where they offer more detailed information.

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Left hand model. The Grover® “MINI” is lightweight, compact and durable for modern electric basses. Gear ratio is 20 to 1. Housing is specially machined to achieve the precise tolerance that prevents slippage and allows fine tuning. Sealed gear box has permanent lubrication that makes the MINI friction-free for life. Individually hand-tested. Screws and bushings included. For detailed specifications and/or fitting guides please locate this item on the Grover website where they offer more detailed information.

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4-in-line, left hand SELF ALIGNING THRUST BEARINGS! The 145 Series is innovative in design and styling. Durable die-cast housing and butterfly button with self-aligning thrust bearings to allow the worm and gear to mesh perfectly. Safety-type string posts with cutaway shoulders to provide slip-over. May be used with ALL modern bass guitar headstocks. • Sealed-in, lubricated gears• Self aligning thrust bearings• 23:1 gear ratio• 21/32” post hole• Post length to hole: 20.9mm• Overall post length: 34.3mm• Weight per pc/per set: 3.8oz/15.2oz• Max. string gauge: .145”• Hardware included (bushings, washers, screws)• Drop-in replacement for: None at this time For detailed specifications and/or fitting guides please locate this item on the Grover website where they offer more information.

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3 treble and 3 bass, set of 6. Distinctive in styling and quality, the Imperial™ made it’s first appearance in the 1970’s. The most notable feature of this unique machine head is the futuristic Three Step button, a fresh and funky design trademarked by Grover. This re-introduction if the Imperial™ is an exact reproduction of the originals, including a 16 to 1 gear ratio.

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3 treble and 3 bass, set of 6. The 205 Series is the ultimate in sleek design and performance. Small and lightweight, these precision-made machine heads fit guitar headstocks that will not take full size machines. The mini buttons provide more space for player’s fingers (even large fingers) to tune strings. Gear ratio is 14:1. Sealed in lubrication keeps the mini perfect for a lifetime! Sealed-in, lubricated gears14:1 gear ratio25/64” post holePost length to hole: 20.55mmOverall post length: 26.9mmWeight per pc/per set: 1.2oz/7.2ozMax. string gauge: .074”Hardware included (bushings, washers, screws) For detailed specifications and/or fitting guides please locate this item on the Grover website where they offer more detailed information.

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12-string, set of 12. Totally professional in design and performance. Small, lightweight, this precision made machine fits guitar headpieces that will not take full size machines. The mini buttons provide more space for player’s fingers (even large fingers) to tune strings. Gear ratio is 14 to 1. Sealed in lubrication keeps the mini perfect for a lifetime! Includes 5/8” washers, bushings and wood screws. For detailed specifications and/or fitting guides please locate this item on the Grover website where they offer more detailed information.

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12-string, set of 12. Totally professional in design and performance. Small, lightweight, this precision made machine fits guitar headpieces that will not take full size machines. The mini buttons provide more space for player’s fingers (even large fingers) to tune strings. Gear ratio is 14 to 1. Sealed in lubrication keeps the mini perfect for a lifetime! Includes 5/8” washers, bushings and wood screws. For detailed specifications and/or fitting guides please locate this item on the Grover website where they offer more detailed information.

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Left-hand 6-in-line, set of 6. Totally professional in design and performance. Small, lightweight, this precision made machine fits guitar headpieces that will not take full size machines. The mini buttons provide more space for player’s fingers (even large fingers) to tune strings. Gear ratio is 14 to 1. Sealed in lubrication keeps the mini perfect for a lifetime! Includes 5/8” washers, bushings and wood screws. For detailed specifications and/or fitting guides please locate this item on the Grover website where they offer more detailed information.

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Mini size ebony.

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3 treble and 3 bass, set of 6. The 205 Series is the ultimate in sleek design and performance. Small and lightweight, these precision-made machine heads fit guitar headstocks that will not take full size machines. The mini buttons provide more space for player’s fingers (even large fingers) to tune strings. Gear ratio is 14:1. Sealed in lubrication keeps the mini perfect for a lifetime! Sealed-in, lubricated gears14:1 gear ratio25/64” post holePost length to hole: 20.55mmOverall post length: 26.9mmWeight per pc/per set: 1.2oz/7.2ozMax. string gauge: .074”Hardware included (bushings, washers, screws) For detailed specifications and/or fitting guides please locate this item on the Grover website where they offer more detailed information.

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12-string, set of 12. Totally professional in design and performance. Small, lightweight, this precision made machine fits guitar headpieces that will not take full size machines. The mini buttons provide more space for player’s fingers (even large fingers) to tune strings. Gear ratio is 14 to 1. Sealed in lubrication keeps the mini perfect for a lifetime! Includes 5/8” washers, bushings and wood screws. For detailed specifications and/or fitting guides please locate this item on the Grover website where they offer more detailed information.

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Left-hand 6-in-line, set of 6. The 205 Series is the ultimate in sleek design and performance. Small and lightweight, these precision-made machine heads fit guitar headstocks that will not take full size machines. The mini buttons provide more space for player’s fingers (even large fingers) to tune strings. Gear ratio is 14:1. Sealed in lubrication keeps the mini perfect for a lifetime! • Sealed-in, lubricated gears• 14:1 gear ratio• 25/64” post hole• Post length to hole: 20.55mm• Overall post length: 26.9mm• Weight per pc/per set: 1.2oz/7.2oz• Max. string gauge: .074”• Hardware included (bushings, washers, screws) For detailed specifications and/or fitting guides please locate this item on the Grover website where they offer more detailed information.

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Set of 10. The 210 Series is designed specifically for use with pedal steel guitars. The shortened string post and bushing are designed for the slotted head of a pedal steel. It will accommodate a headstock thickness varying from .256” (7.1mm) to .400” (10.16mm). The string post extends .900” (22.87mm) from the base of the housing. The housing has a mounting pin at the back, eliminating the need for a mounting screw. This also facilitates mounting on the cast headstocks used on pedal steel guitars. • Accommodates a headstock thickness varying from .256” (7.1mm) to .400” (10.16mm)• Sealed-in, lubricated gears• 14:1 gear ratio• 25/64” post hole• Post length to hole: 18mm• Overall post length: 22.87mm• Weight per pc/per set: 1.1oz / 11.0oz• Max. string gauge: .74”• Hardware included (bushings, washers) For detailed specifications and/or fitting guides please locate this item on the Grover website where they offer more detailed information.

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3+3, Set of 6. Traditional Grover® quality and craftsmanship. Beautifully engraved plates. Three on a plate. Butterfly style, pearloid buttons, plastic coated string posts. Includes screws. For detailed specifications and/or fitting guides please locate this item on the Grover website where they offer more detailed information.

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6-in-line, set of 12.The 305 Series is made with the same quality as all Rotomatic® models. Slightly larger than the Mini Rotomatics®, the mid-size series features an 18:1 gear ratio for smoother, more precise tuning. This compact machine head is perfect for use on smaller and in-line headstocks. Sealed-in, lubricated gears18:1 gear ratio25/64” post holePost length to hole: 22.4mmOverall post length: 27.5mmWeight per pc/per set: 1.2oz/7.2ozMax. string gauge: .064”Hardware included (bushings, washers, screws)Drop-in replacement for: 406 Series Includes all necessary mounting hardware and the famous Grover lifetime guarantee.

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6-in-line, set of 6. A mid size Mini Rotomatic, with all the advantages of the original Mini Rotomatic, but with an 18:1 gear ratio for finer, more precise tuning. Includes all necessary mounting hardware and the famous Grover lifetime guarantee.

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3+3, Set of 6. Excellence in materials and craftsmanship are the hallmark features of these classic machine heads. The die cast base provides a rigid foundation for the gear and worm, assuring perfect alignment and mesh. The pearloid buttons are attached with a tension screw to provide the feel of your preference. A bearing over the worm shaft provides additional support and enhances the smooth performance. Includes wood screws. For detailed specifications and/or fitting guides please locate this item on the Grover website where they offer more detailed information.

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3+3, Set of 6. Excellence in materials and craftsmanship are the hallmark features of these classic machine heads. The die cast base provides a rigid foundation for the gear and worm, assuring perfect alignment and mesh. The pearloid buttons are attached with a tension screw to provide the feel of your preference. A bearing over the worm shaft provides additional support and enhances the smooth performance. Includes wood screws. For detailed specifications and/or fitting guides please locate this item on the Grover website where they offer more detailed information.

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6-in-line, set of 6. The same innovative engineering and classic design as the Original Locking Rotomatics®, but with smaller buttons for 6-in-line guitars, or for those who prefer a little more space for their fingers. Gear ratio is 18 to 1. For detailed specifications and/or fitting guides please locate this item on the Grover website where they offer more detailed information.

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For standard guitars, set of 6. From the makers of the world’s finest machine heads, come the superb Grover -Roto-Grip’ tuners, which now both lock and fine tune! With this new system, changing strings has never been easier - just thread the string through the tuner post hole, pull it tight, and turn the thumbwheel clockwise. An internal pin locks the string, and you’re ready to tune. Additionally, when replacing strings, Grover’s unique design prevents the thumb wheel from falling out, so you won’t lose it! With an 18:1 gear ratio, precise tuning occurs in seconds - just a few turns of the tuner button and you are -locked’ in tune. Grover ROTO-GRIPS are available in standard and mini formats, and in the usual layout configurations. For detailed specifications and/or fitting guides please locate this item on the Grover website where they offer more detailed information.

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For standard guitars, set of 6. From the makers of the world’s finest machine heads, come the superb Grover -Roto-Grip’ tuners, which now both lock and fine tune! With this new system, changing strings has never been easier - just thread the string through the tuner post hole, pull it tight, and turn the thumbwheel clockwise. An internal pin locks the string, and you’re ready to tune. Additionally, when replacing strings, Grover’s unique design prevents the thumb wheel from falling out, so you won’t lose it! With an 18:1 gear ratio, precise tuning occurs in seconds - just a few turns of the tuner button and you are -locked’ in tune. Grover ROTO-GRIPS are available in standard and mini formats, and in the usual layout configurations. For detailed specifications and/or fitting guides please locate this item on the Grover website where they offer more detailed information.

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For standard guitars, set of 6. From the makers of the world’s finest machine heads, come the superb Grover 'Roto-Grip’ tuners, which now both lock and fine tune! With this new system, changing strings has never been easier - just thread the string through the tuner post hole, pull it tight, and turn the thumbwheel clockwise. An internal pin locks the string, and you’re ready to tune. Additionally, when replacing strings, Grover’s unique design prevents the thumb wheel from falling out, so you won’t lose it! With an 18:1 gear ratio, precise tuning occurs in seconds - just a few turns of the tuner button and you are -locked’ in tune. Grover ROTO-GRIPS are available in standard and mini formats, and in the usual layout configurations. For detailed specifications and/or fitting guides please locate this item on the Grover website where they offer more detailed information.

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Mini 3+3, set of 6. From the makers of the world’s finest machine heads, come the superb Grover 'Roto-Grip’ tuners, which now both lock and fine tune! With this new system, changing strings has never been easier - just thread the string through the tuner post hole, pull it tight, and turn the thumbwheel clockwise. An internal pin locks the string, and you’re ready to tune. Additionally, when replacing strings, Grover’s unique design prevents the thumb wheel from falling out, so you won’t lose it! With an 18:1 gear ratio, precise tuning occurs in seconds - just a few turns of the tuner button and you are -locked’ in tune. Grover ROTO-GRIPS are available in standard and mini formats, and in the usual layout configurations.For detailed specifications and/or fitting guides please locate this item on the Grover website where they offer more information.

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Mini 6-in-line, set of 6. From the makers of the world’s finest machine heads, come the superb Grover 'Roto-Grip’ tuners, which now both lock and fine tune! With this new system, changing strings has never been easier - just thread the string through the tuner post hole, pull it tight, and turn the thumbwheel clockwise. An internal pin locks the string, and you’re ready to tune. Additionally, when replacing strings, Grover’s unique design prevents the thumb wheel from falling out, so you won’t lose it! With an 18:1 gear ratio, precise tuning occurs in seconds - just a few turns of the tuner button and you are -locked’ in tune. Grover ROTO-GRIPS are available in standard and mini formats, and in the usual layout configurations. For detailed specifications and/or fitting guides please locate this item on the Grover website where they offer more detailed information.

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Mini 6-In-Line, set of 6 From the makers of the world’s finest machine heads, come the superb Grover 'Roto-Grip’ tuners, which now both lock and fine tune! With this new system, changing strings has never been easier - just thread the string through the tuner post hole, pull it tight, and turn the thumbwheel clockwise. An internal pin locks the string, and you’re ready to tune. Additionally, when replacing strings, Grover’s unique design prevents the thumb wheel from falling out, so you won’t lose it! With an 18:1 gear ratio, precise tuning occurs in seconds - just a few turns of the tuner button and you are -locked’ in tune. Grover ROTO-GRIPS are available in standard and mini formats, and in the usual layout configurations. For detailed specifications and/or fitting guides please locate this item on the Grover website where they offer more detailed information.

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Mini set of 6. From the makers of the world’s finest machine heads, come the superb Grover 'Roto-Grip’ tuners, which now both lock and fine tune! With this new system, changing strings has never been easier - just thread the string through the tuner post hole, pull it tight, and turn the thumbwheel clockwise. An internal pin locks the string, and you’re ready to tune. Additionally, when replacing strings, Grover’s unique design prevents the thumb wheel from falling out, so you won’t lose it! With an 18:1 gear ratio, precise tuning occurs in seconds - just a few turns of the tuner button and you are -locked’ in tune. Grover ROTO-GRIPS are available in standard and mini formats, and in the usual layout configurations. For detailed specifications and/or fitting guides please locate this item on the Grover website where they offer more information.

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