Gotoh SD91-05M Aged Tuners 6R N, Set of Machine Heads for Electric Guitar, Vintage F-Style in aged relic finish, Configuration: Six right, Design: Semi-closed, Buttons: Butter Bean metal, Gear ratio: 1:15, Shaft length (to string hole): 21.6 mm, Mounting hole: 8.8 mm, Mounting: Screws, Screw bracket angles: 90° and 180°, Finish: Aged nickel, Includes fixing screws and impact sleeves for 8.8 mm mounting holes, Made in Japan