Hipshot BT-7 D-Tuner - D-Tuner for bass guitar, for Mexican-made F-style basses, includes manual. Finish: nickel, diameter 13 mm, mounting hole diameter with sleeve 14.1 mm
D-Tuner for Electric Bass Suitable for G&L and Music Man electric basses, Tuning from E to D by mini lever, Right-handed version, Bass Side, Replaces Schaller BM tuners, Mounting diameter: 17.5 mm (0.69"), Gear ratio:...'