Locking versions of the classic oval knob, stamped housing tuners found on vintage Fender® guitars. For 6-in-line pegheads.6-in-line locking tuners that are the perfect upgrade for old or new Fenders with ''Kluson-style'' tuners — they're a direct retrofit!Item Details:Set of 6-in-line tunersMounting screws (7) and round press-fit peghead bushings (6) includedFeature old style stamped gear housingsFeature modern, improved 15:1 gearing for smoother, more precise actionPeghole spacing is 4-11/16'' (119.06mm)11/32'' (8.73mm)-diameter pegholes required3 of the tuners have a green decal on the back of the machine, indicating a smaller diameter string hole, and are to be used with the unwound (G,B,E) stringsNickel-platedInstallation TipsBushings: 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.