Graph Tech PRN-3422-N0 Machine Head
Graph Tech PRN-3422-N0 Machine Head, Machine heads for acoustic guitar, Configuration: 3 left, 3 right, Open construction, Each machine head has its own gear ratio calibrated for the respective string, Gear ratios: E - 12:1, B - 20:1, G - 14:1, D - 20:1, A - 24:1, E - 39:1, A half turn of any rotation changes the tuning of each string by a semitone for faster, more accurate tuning of each string, Axle diameter without mounting sleeve: 6.0 mm, Axle diameter with mounting sleeve: 8.8 mm, Butter bean tuning wings, Weight (each): Approx. 25 g, Finish: Nickel