GraphTech RATIO Locking Tuning Machines, 6 Inline

Product Code: GTR872-LG

Availability:In stock

$170.00 - $199.00

Available Options


GraphTech RATIO  Locking Tuning Machines, 6 Inline, Small Buttons

Select between contemporary and classic button tuners


  • 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


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.