Sperzel Locking Keys, Chrome plated, 3x3, 12:1, with bushings and washers. Single pin mount, no mounting screws needed. For 9/16" - 11/16" thick headstocks, requires 10mm (13/32")-diameter holes.
This product is subject to our Tuning Key Return Policy. Please visit allparts.com/returns to review this return policy before you purchase.