Patented RATIO gear technology. RATIO – Calibrated tuners incorporate different string gauges into the tuning equation. From bottom B to G – 48:1, 36:1, 30:1, 20:1, 18:1. 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 PRB-5320 is a right-handed set of RATIO calibrated tuners for BASS that use a 3 x 2 configuration. In order to achieve higher gear ratios, Ratio is the world’s first machine head using a 3 x 2 gear design. double cased with hardened steel gear. Incredibly soft and super durable.

Specifications

• Gear ratio: unique for each string position – one tone of one turn
• Required dowel hole diameter: 35/64″ (14 mm)
• Rope post diameter: 0.547″ (13.9 mm)
• Length from rope post to rope hole: 1.030″ (26.1 mm)
• Weight per machine head: 1.86 oz (53 g)
• Weight per set of six: 9.3 oz (265 g)
• Rope diameter up to 0.98 gauge (or more if wound in a cone)
• Includes 5 machine heads, mounting screws and bushings