5-wheel planetary gear. Locking mechanism built into the button. Central planetary drive. Gear ratio 1:4.
- 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.