The PRL-8311, 8322, 8331, 8341 are right-handed sets of Locking RATIO calibrated machine heads for electric guitar that use 3 x 3 tuners, such as Gibson and PRS style guitars. A great upgrade from single gear machine heads, such as Grover, Schaller, Sperzel, Kluson, etc. Patented RATIO RATIO 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, 35:1, 20:1, 12:1. We have balanced the gear ratios for each string simplifying the tuning process. With RATIO, a half turn is a half tone! Each string responds the same to any tuning setting. Predictable and precise tuning, on every string.

Specifications

• Gear ratio: unique for each string position – one turn-one tone
• Required dowel hole diameter: 13/32″ (10 mm)
• Rope Post Diameter: 0.236″ (6mm)
• Length from rope post to rope hole: 0.910″ (23 mm)
• Weight per single 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 sockets
• Includes 4 free sets of aluminum mounting plates