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Graph Tech PRB-5320-B0 Bass Ratio 3+2 Y Key Tuning Machines
Graph Tech PRB-5320-B0 Bass Ratio 3+2 Y Key Tuning Machines
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Graph Tech PRB-5320-B0 Bass Ratio 3+2 Y Key Tuning Machines

Graphtech
$127.02
$127.02
$149.44
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The PRB-5320 is a right-handed set of RATIO® Calibrated Machine Heads for BASS that use a 3 x 2 configuration.

In order to achieve higher gear ratios, Ratio are the world's first machine heads using a double envelope gear design with a hardened steel gear. Amazingly smooth and super strong.

 

  • RATIO® patented gear technology
    RATIO® - Calibrated Machine Heads incorporate different string gauges into the tuning equation.
  • From Low B to G - 48:1, 36:1, 30:1, 20:1, 18:1.
    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.
  • Gear ratio: unique for each string position - one turn-one tone
  • Peg holes diameter required: 35/64" (14mm)
  • String post diameter: 0.547" (13.9mm)
  • String post length to string hole: 1.030” (26.1mm)
  • Weight per single machine head: 1.86oz (53g)
  • Weight per set of six: 9.3oz (265g)
  • String diameter up to 0.98 gauge (or larger if taper-wound)
  • Includes 5 machine heads, mounting screws, and bushings