Check the listing for details. KLUSON WAFFLEBACK 3 ON SIDE GOLD - PEARLOID KEYSTONE BUTTON. Condition: New. Listed at 138.41 USD. Named for the distinctive grooves on the cast gear housings, these are improved reproductions of the deluxe tuners used on many Gibson® guitars. Features: Nylon worm bearings for smooth operation 15:1 gear ratio for precise tuning Maintenance-free sealed lubrication Set of 6 (3-left/3-right) Gold finish with plastic keystone knobs Mounting screws (12) and press-fit bushings (6) included 11/32"-diameter pegholes required Installation Tips — Bushings: We recommend our Standard Peghole Reamer (sold separately) to cut smooth, perfectly round holes. Mounting screws: Pilot holes required. Installing delicate screws into hard wood requires great care and accuracy. We highly recommend a No.44 drill bit for the pilot hole before installing these screws. Lubricate the screw threads with cutting lubricant (also wax or a bar of soap) to reduce friction and help them thread properly.