Ratio PRL-9721-B0 : Electric Locking Machine Heads 6 in-line (staggered posts) in Black Finish

Graph Tech PRL-9721-B0 Ratio Locking, Locking Machine Heads for Electric Guitar, Right-handed set, Closed construction, Staggered posts (different shaft heights, thus no string hold-downs necessary), 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, Locking screw 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, 6 Pieces: 6-in-Line, Bass Side (Left), 2-Pin mounting, Axis diameter without mounting sleeve: 6.0 mm, Mounting diameter with mounting sleeve: 10.0 mm, Incl. 4 sets InvisoMatch standard mounting plates to use existing screw holes, Weight approx. 37.75 g (single), Mini Contemporary knobs, Black finish