Vintage-style keystone knobs and stamped housings make these tuners the ideal vintage tuner replacement or upgrade. For 3-left/3-right pegheads. These fine reproductions feature: Original-style stamped gear housings Modern improved 15:1 gearing for smoother, more precise action Molded greenish plastic knobs, just like the originals Set of 6 (3 left, 3 right) Round press-fit peghead bushings (6) and screws (12) included Fits 11/32"-diameter pegholes Installation Tips — Bushings: We recommend a .340" diameter reamer to cut a clean, accurate counterbore for a professional job. Fit the press-fit tuner bushings correctly so your tuners will work smoothly. Mounting screws: Pilot holes required. Installing delicate screws into hard wood requires great care and accuracy. We highly recommend a No.44 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.