The PRL-9721 and PRL-9731 are right-handed sets of Locking RATIO® Calibrated Machine Heads for electric guitars that use 6-in-line tuners with staggered posts (eliminates the need for a string tree).It has a two-pin casing that can be used as is, or with our Patented InvisoMatch Mounting Plates [opens in new tab].4 different sets of InvisoMatch mounting plates in brushed aluminum are included to make installation on most guitars fast and accurate by using your existing screw mounting holes.
Gear ratio: unique for each string position - one turn-one tonePeg holes diameter required: 13/32" (10mm)String post diameter: 0.236" (6mm)String post length to string hole: 0.827” (21mm) - 0.787" (20mm) - 0.748" (19mm)Weight per single machine head: 0.083lbs (38g)Weight per set of six: 0.496lbs (225g)String diameter up to 72 gaugeIncludes 6 machine heads, mounting screws and bushingsIncludes complimentary 4 sets of aluminum mounting plates