Graph Tech RATIO patented gear technology
RATIO – Calibrated 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.
- Graph Techbalanced 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.
ThePRL-8731right-handed sets of Locking RATIO Calibrated Machine Heads for electric guitars that use 6-in-line tuners.
It has a two-pin casing that can be used as is, or with Graph Tech’s 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.
- 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
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