Gotoh SD510-SL Tuners 3L/3R N, Set of Machine Heads for Electric Guitar, Configuration: Three left / three right, Deluxe Vintage G-Style, Gear ratio: 1:15, Design: Semi-enclosed, Brass shaft, Thicker base plate compared to SD90, Machine heads with Lubri-Plate coating for smoother shaft running, Gotoh 510 engraving on the back, Buttons: Keystone Single Ring, Shaft length (to string hole): 19.5 mm, Mounting hole: 8.8 mm, Fixing: Screws, Nickel finish, Manufacturer number: SD510-SL-N, Includes fixing screws, impact sleeves Gotoh and C-A-R-D system for increased vibration transmission: enhances sustain and overtones and protects the headstock finish, Made in Japan