Graph Tech PRB-4220-B0 Ratio Bass

Set Of Machine Heads For Electric Basses

• Configuration: 4 pieces; 2 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 per string: 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 tuning knobs
• Finish: Black