Grover locking guitar tuners with thumbscrew in chrome.
- Model 502C locking machine heads utilize the famous 18:1 Rotomatic design.
- Thumb screw mechanism.
- Insert the string through the post hole, wrap around once, then lock by tightening with the thumb screw.
- Perfect replacement for the most standard machine heads.
- Three per side.
- 10-mm diameter (13/32 inch) peg holes are required.
- Colour: CHROME.
- Mounting screws and threaded hex peg head bushings with washers are included.