The Gibson Deluxe Green Key Machine Head Tuner Set is a vintage machine head set with pearloid buttons that feature solid nickel, closed housing construction, period-correct vintage styling, and traditional pearloid buttons that deliver precise tuning, while adding a luxurious, classic feel to your guitar's headstock. This OEM part comes in a Vintage Nickel finish, featuring screw in bushings, which require a larger diameter mounting hole than traditional push-in bushing tuners. As always, feel free to contact our store for more details, or with any questions.