Graph Tech PRN-2411-B0 Acoustic 3+3 Tuners Black

The Graphtech PRN-2411 and PRN-2421 are the right-handed sets of RATIO® Calibrated Machine Heads for acoustic guitar that use 3 per side tuners in Black.

Features:

-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.

-We 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.

-Includes 6 machine heads, mounting screws and bushings

-Includes complimentary 4 sets of aluminum mounting plates

Specifications

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