Grover 502 Series Roto-Grip Locking Rotomatics, Keystone Button - Black Chrome

The 502 Series utilize the famous Rotomatic® design with a "thumb screw" mechanism which locks the string into place, allowing for quick string changes. To operate, insert the string through the post hole, wrap around once, then lock by tightening with the thumb screw.

Specifications

- Sealed-in, lubricated gears
- 18:1 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 Series
- 109-18 Series
- 135 Series (Top mounting hole will be visible)
- 136 Series (Top mounting hole will be visible)
- 502 Series
- 509 Series