Grover Roto-Grip Locking Rotomatics 18:1 Tuning Machines 502C Chrome Set of 6 Tuners

New in package. From Grover: Roto-Grip Locking Rotomatics® utilize the famous 18:1 Rotomatic® design with a “thumb screw” mechanism which locks the string into place. 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. Includes all mounting hardware. 502C Chrome For standard guitars, 3 Treble and 3 Bass, Set of 6.