Graph Tech PRL-8341-C0 Ratio Locking

Graph Tech PRL-8341-C0 Ratio Locking, Set of locking machine head for electric guitar, Right-handed set, Configuration: 3x left, 3x right, Closed construction, Each machine head has its own ratio, calibrated for the respective string, A half turn of any machine head changes the tuning of the respective string by a semitone, Faster, more accurate tuning of each string, Thumbscrew on the back to clamp the string in place, Ratio: E - 12:1, B - 20:1, G - 35:1, D - 20:1, A - 24:1, E - 39:1, 2-Pin mounting, Axle diameter without assembly sleeve: 5.9 mm, Installation diameter with assembly sleeve: 9.9 mm, Vintage button, Finish: Chrome, Weight per machine head: approx. 37.75 g, Incl. 4 sets of InvisoMatch standard mounting plates to use existing screw holes ...