Hipshot Ultralite Bass Tuning Keys, set of 4 in line, Stainless steel Clover Leaf keys, Chrome finish, made in USA. From Allparts, part no. TK 7757-010. Never used, 3 are still unopened and sealed to the backing cards, only 1 opened. The Clover Leaf keys can be reversed in the housing, so 2 could be changed to make a 2 a side configuration if needed.
Housing machined from light weight aircraft grade Aluminium. 20:1 gear ratio. 1/2 inch (12.7mm) string posts, bushings to fit 11/16 inch (17.5mm) headstock holes.
I've mislaid the small screw for the opened one, but will include a suitable one.