These inexpensive tuners for solid pegheads are a quick and easy way to get your guitar up and strummin' again. This open-gear set is ideal for fixing up those "yardsale special" guitars. 14:1 ratio Fit 5/16"-diameter pegholes Press-fit bushings (6) and mounting screws (12) included Set of 6 (3 left, 3 right) Chrome with white plastic knobs Installation Tips - Bushings: We recommend a .328" diameter reamer to cut a clean, accurate counterbore for the bushings. Fit the press-fit tuner bushings correctly so your tuners will work smoothly. Mounting screws: Pilot holes are required for the mounting screws. Installing delicate screws into hard wood requires great care and accuracy. We highly recommend a No.50 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.