Graph Tech 3+3 Electric Locking Machine Head - Chrome Contemporary PRL-8311-CO

Graph Tech Ratio Machine Heads – Ultimate Control and Precision This is a right handed set of Locking Ratio Tuned Machine Heads for electric guitar that use 3 per side tuners. Fits many Gibson, Epiphone style guitars and a lot of acoustic guitars if you want to upgrade to a locking set of machine heads. A two pin casing that can be used as is, or with Graph Tech's Patented InvisoMatch Mounting Plates. Description Ratio - Tuned Machine Heads incorporate different string gauges into the tuning equation. From Low E to High E 39:1, 24:1, 20:1, 35:1, 20:1, 12:1. Graphtech has balanced the gear ratios to each string simplifying the tuning process. With Ratio, a half turn is a semi-tone! Every string reacts the same to any tuning adjustment. Predictable, precise tuning on every string. Ratio® tuning feels natural. You don't have to think about which string you are tuning because they all feel and respond the same. No more overshooting the Low E or plain G. No more twisting away on the High E or D string. Open tunings have never been easier. String gauges such as light top, heavy bottom are no problem with Ratio®; they still do the same precision tuning. With RATIO®, a half-turn is a semi-tone! Every string reacts the same to any tuning adjustment. Predictable, precise tuning, on every string. Gear ratio: unique for each string position - one turn-one tone Peg holes diameter required: 13/32" (10mm) String post diameter: 0.236" (6mm) String post length to string hole: 0.910” (23mm) Weight per single machine head: 0.083lbs (38g) Weight per set of six: 0.496lbs (225g) String diameter up to 72 gauge Includes 6 machine heads, mounting screws and bushings Includes complimentary 4 sets of aluminum mounting plates Ratio® tuning feels natural. You don't have to think about which string you are tuning because they all feel and respond the same. No more overshooting the Low E or plain G. No more twisting away on the High E or D string. Open tunings have never been easier. String gauges such as light top, heavy bottom are no problem with Ratio®; they still do the same precision tuning.