Grover 509 Series Roto-Grip Locking Rotomatics - Gold

Roto-Grip Locking Rotomatics® utilises the famous 18:1 Rotomatic® design with a "thumb screw" mechanism that locks the string into place. Insert the string through the post hole, wrap around once, then lock by tightening with the thumbscrew. Perfect replacement for the most standard machine heads. Includes all mounting hardware.

Features
• 509G gold tuners for standard guitars
• 3 treble tuners
• 3 bass tuners
• "Thumb screw" mechanism