3+3 Ratio Acoustic Open Back Tuners (PRN-3411, Select Finish)

RATIO® patented gear technologyRATIO® - Calibrated Machine Heads incorporate different string gauges into the tuning equation., From Low E to High E

Tuning Machines & Why They Matter

Graph Tech Ratio 3+3 Retro Tuning Machine Heads Nickel 6 String

Graph Tech PRN-2341-G0 Ratio Electric 3+3 Tuned Machine Heads - Vintage Style / Gold Finish

Graph Tech Ratio Machine Heads Acoustic Guitar OpenBack 3x3 Skeleton PRN-3411-N0 : Musical Instruments

Graph Tech Guitar Labs

3+3 RATIO Acoustic Guitar Machine Heads GT-118-D01

Auto-Trim Locking Tuning Machines - 3+3 - Black - Sweetwater

PRN-3411-N0 - Set of 6 Acoustic Open Back Guitar Tuned Machine Heads L3-R3 - Nickel - Music Gallery

RATIO 3x3 Acoustic Open Back Guitar Tuners PRN-3411