Gibson's vintage machine heads feature closed housing construction with period-correct vintage styling and traditional White Button keys. This set delivers precise tuning while adding a luxurious, classic feel to your guitar's headstock. This factory-spec set comes in a Vintage Nickel finish. Special note: these tuners feature screw in bushings, which require a larger diameter mounting hole than traditional 'push in' bushing tuners. 14:1 Tuning Ratio. • MFSKU PMMH-060 • UPC 711106535364