Harley Benton Parts J03BK L6 Tuner Set; black precision tuning keys; Grover style button; basic location L6, 1 set of 6pcs; precision 15:1 gear ratio; bore diameter 10mm, sealed lubrication, sealed die-casting housings, each tuner comes complete with the washer, threaded hex bushing, and screw. Made ny Jinho Korea.