Achieve rock-solid tuning stability.
The Grover Rotomatics 102-18 series keystone buttons tuning machines provide precision tuning for your instrument. With an 18:1 gear ratio, you can dial in the perfect pitch on each string. The enclosed gearbox contains specially lubricated gears that spin smoothly and silently, eliminating excess noise during performances. You'll appreciate the ability to finely adjust string tension to your exact preferences thanks to the countersunk tension screw. The 102-18 series tuning machines drop right into the holes on most popular guitar and bass models, letting you upgrade your tuning stability with ease.