Set of six covered VINTAGE CHROME MACHINE HEADS Tuners (Kluson 1960’s style) ” 3 a-side Tuners ” will fit most Gibson or Epiphone style electric guitars. String though shafts with Aged Pearl coloured,Tulip shaped tuning buttons. They offer smooth and stable tuning but add that extra vintage vibe. Ferrule Diameter:8mm headstock holes. This set includes 6 Chrome metal bushings/ferrules,12 Chrome mounting screws.