Check the listing for details. Gotoh Classical Guitar Tuners, with Pearloid Knobs. Color: Red, Size: 4.5, Condition: New, Style Code: AF5836. Listed at 91.70 USD. High quality classical guitar tuning machines with smooth tuning and removable knobs; their elegantly simple polished unplated brass baseplates have an incised vine motif. Details: Complete set of 3-onplate tuners for nylon-string classic guitars with slotted peghead 14:1 gear ratio 35mm (1-3/8") string roller spacing The string roller sleeves are durable 3/8"-diameter white plastic Unplated brass baseplates, with pearloid knobs Each set includes a pair of 3-left/3-right tuning machines with 8 mounting screws Installation Tip— Mounting screws: Pilot holes required. Installing delicate screws into hard wood requires great care and accuracy. We highly recommend a No. 50 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.High quality classical guitar tuning machines with smooth tuning and removable knobsComplete set of 3-onplate tuners for nylon-string classic guitars with slotted peghead14:1 gear ratioUnplated brass baseplates, with pearloid knobsEach set includes a pair of 3-left/3-right tuning machines with 8 mounting screws