Musiclily 2+2 Vintage Open Geared Bass Tuners Machine Head Tuning Keys Pegs Set for Jazz Precision P Bass Replacement, Chrome Economy Sealed Bass Tuning Keys Machine Head Set.The bushing inner diameter 14.20MM, outside diameter 18.25MM, peg diameter is 13.85MM, peg length is 30.5 MM. Alloy metal made; Color: Chrome Material:zinc alloy and plated chrome Open gear style, you can assemble it so that custom your own side;Nut,Ferrule,Screws are included. Package Content:4 x Bass Tuning Pegs ;4 x ferrules 4 x screws(2R2L)