Schaller G-Series Deluxe Keystone Top Locking Machine Heads Model: 3 left 3 right Wings: Keystone single ring Shaft length: Top Locking Solid Headstock 19, 5mm Ratio: 1: 16 Including: 6 banjo bolts, 6 washers, 12 mounting screws Finsih: Nickel Draw a classic look and optimized functionality this mechanics. Fits with vintage original specs for many historical and modern guitars. Permanently lubricated mechanics with precision machined parts and perfectly machined surfaces. The self-locking drive ensures even, fine and stable tuning.