Patented RATIO RATIO Gear Technology – Calibrated tuners integrate 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’ve balanced the gear ratios for each string, simplifying the tuning process. With RATIO, a half turn is a half tone! Each string reacts the same to any tuning adjustment. Predictable and precise tuning on every string. The PRL-8311, 8322, 8331, 8341 and 8351 are right-handed sets of Locking RATIO calibrated tuners for electric guitars that use 3 x 3 tuners, such as Gibson-style and PRS-style guitars. A great upgrade from single gear machine heads, such as Grover, Schaller, Sperzel, Kluson, etc. It features a two-pin housing that can be used as is or with our patented InvisoMatch mounting plates [opens in a new tab]. 4 different sets of brushed aluminum InvisoMatch mounting plates are included to make installation on most guitars quick and precise using your existing screw mounting holes.

Specifications

• Gear ratio: unique for each string position – one tone of one turn
• Required dowel hole diameter: 13/32″ (10 mm)
• Rope Post Diameter: 0.236″ (6mm)
• Length from string post to string hole: 0.910 in (23 mm)
• Weight per machine head: 0.083 lb (38 g)
• Weight per set of six: 0.496 lb (225 g)
• Rope diameter up to 72 gauge
• Includes 6 machine heads, mounting screws and bushings
• Includes 4 free sets of aluminum mounting plates