Graph Tech PRN-2731-C0 Electric Guitar Tuners

Precisely control your tuning with Graph Tech Ratio tuners. This set has been specially designed for right-handed instruments with six-in-line headstocks.

The PRN-2731 are right-handed sets of RATIO Calibrated Machine Heads for electric guitars that use 6-in-line tuners.

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.
Gruv Gear balanced the gear ratios to each string simplifying the tuning process.
With RATIO, a half-turn is a semitone!

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: 0.890" (22.6mm)
- Weight per single machine head: 0.066lbs (30g)
- Weight per set of six: 0.393lbs (179g)
- String diameter up to 72 gauge
- Includes 6 machine heads, mounting screws and bushings
- Includes complimentary 4 sets of aluminum mounting plates

Dimensions and Weight in Packaging
Shipping Weight: 0.65 lbs
Shipping Dimensions: 5 x 3 x 2 in
Manufacturer Part Number (MPN): PRN-2731-B0
Shipping Weight: 0.71 lbs
Shipping Dimensions: 5 x 3 x 2 in
Manufacturer Part Number (MPN): PRN-2731-C0

For support or warranty questions, please contact the manufacturer:
Phone: 800-388-7011


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