Graph Tech PRN-2411-C0 Ratio Acoustic 3+3 Tuned Machine Heads - Contemporary Style / Chrome Finish

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, 14:1, 20:1, 12:1. They 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.

The PRN-2411 and PRN-2421 are the right-handed sets of RATIO Calibrated Machine Heads for acoustic guitar that use 3 per side 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 Tuned Machine Heads: The New Standard In Tuning Technology

Features:

• 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