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Handcrafted Grover Super Rotomatics Machineheads ~ 3+3 ~ Nickel Complete Set [URPqJ1Oh]

$21.99 $70.99 -69%

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 ge

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Handcrafted Grover Super Rotomatics Machineheads ~ 3+3 ~ Nickel Complete Set [URPqJ1Oh]

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 gears
14:1 gear ratio
25/64” post hole
Post length to hole: 23mm
Overall post length: 28.2mm
Weight per pc/per set: 1.6oz/9.6oz
Max. 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.

What Our Customers Say

January 22, 2026

Absolutely no complaints!

The quality is superb and the performance is just outstanding.

- Dylan T..

January 22, 2026

Absolutely no complaints!

It's a very solid and reliable tool. I can't recommend it enough.

- Briar T..

January 22, 2026

Absolutely no complaints!

This product is a superb find. The build quality is top-notch and then some.

- Ford N..

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