Graph Tech Ratio 3x2 5-String Bass Tuners, Y-Key - BLACK, PRB-5320-B0

Graph Tech PRB-5320-B0 Ratio Bass, Machine Heads Set For 5-String Electric Basses, Configuration: 3 + 2 (3 x left, 2 x right), Enclosed construction, Each machine head has its own transmission ratio calibrated for the respective string, One full turn of any machine head results in a complete pitch change (+ / -), Gear ratio: B - 48:1, E - 36:1, A - 30:1, D - 20:1, G - 18:1, Shaft diameter without mounting sleeve: 8.9 mm, Mounting diameter with mounting sleeve: 13.9 mm, Weight per machine head: approx. 52.62 g, Y-Style Contemporary knobs, Finish: Black