Wilkinson 3R3L 19:1 Ratio Open Gear Machine Heads Instrument/Accessory finish:Chrome The GA body shape sits

The GA body shape sits comfortably between a dreadnought and smaller body styles

compatible with most knobs

This model includes electronics with a built-in tuner

Power Supply: Battery or AC powered

This light weight

Wilkinson 3R3L 19:1 Ratio Open Gear Machine Heads Instrument/Accessory finish:Chrome The GA body shape sitsFits many electric guitars and acoustic guitars with 3R+3L tuners, like LP SG ES PRS style guitars Bushing outer diameter: 8. 8mm(11 32 inch) Gear ratio 19: 1, open gear design Material: metal alloy, well finished, stable and long lasting Package includes: 6pcs machine heads set (3R+3L) and mounting accessories