The PRN-2721 and PRN-2731 are a right-handed sets of RATIO® Calibrated Machine Heads for electric guitar that use 6-in-line tuners.It has a two pin casing that can be used as is, or with our Patented InvisoMatch Mounting Plates.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.
RATIO patented gear technologyRATIO - Calibrated Machine Heads incorporate different string gauges into the tuning equationFrom Low E to High E 39:1, 24:1, 20:1, 35:1, 20:1, 12:1We balanced the gear ratios to each string simplifying the tuning processWith RATIO®, a half turn is a semi-toneEvery string reacts the same to any tuning adjustment. Predictable, precise tuning, on every stringGear 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: 0.890” (22.6mm)Weight per single machine head: 0.066lbs (30g)Weight per set of six: 0.393lbs (179g)String diameter up to 72 gaugeIncludes 6 machine heads, mounting screws and bushingsIncludes complimentary 4 sets of aluminum mounting plates