3L3R nickel Gear ratio 1:16. Schaller replacement machine head with 2-screw and banjo bolt fixing. Green double ring 'keystone' button. Schaller's improved Keystone tuning buttons feature vintage original specs along with that classic look and feel. Designed to match contemporary as well as historic guitar styles. All parts are precision-crafted and surface-finished. The self-locking drive ensures an even, delicate and steady tuning
