Graph Tech PRB-6330-B0 Ratio Bass Machine Heads with Y-Style Button - 6-String, 3 + 3 - Black, Graph Tech Ratio machine heads for bass, closed construction, each machine head has its own gear ratio, calibrated for the...
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