2 pieces in a set. Locking mechanism built into the button. Central planetary drive. Acrylic button. Gear ratio 1:4. Bore 9.8mm Weight 63g
All sealed tuners are lubricated with Schaller special grease for lifetime maintenance-free service. All parts are precision-crafted and surface-finished, the self-locking drive ensures an even, delicate and steady tuning. All string posts are made of high-grade brass and fitted into the housing with utmost precision, ensuring the best possible tuning accuracy and wear resistance.