Graphtech Ratio Acoustic Guitar Machine Heads 3+3; PRN-2411

RATIO patented gear technology... 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 the gears are balanced 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 is a right-handed set 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.

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