Musiclily 3+3 Guitar Locking Tuners Tuning Keys Pegs Machine Head Set Guitar Parts, Half Moon Button Black Economy 3 Per Side Sealed Tuning Key Set for Acoustics and Electrics guitar;It will fit standard 13/32 inch (10MM) peg holes Alloy metal made; Color: Black; Gear ratio 15:1 Locking Tuners 3x3 tuning keys set; Nut,Ferrule,Screws included Package included: 6 x guitar machine heads(3R+3L)