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GraphTech RATIO Bass Guitar Machine Heads: The Ultimate Tuning Solution

Experience the precision and durability of the GraphTech RATIO Bass Guitar 2+2 Key Machine Heads. Designed for right-handed players, these machine heads offer a 2+2 configuration, providing a superior tuning experience. The RATIO® Calibrated Machine Heads are the new standard in tuning technology, ensuring your bass guitar stays in tune with ease.

Key Features and Specifications

The PRB-4220 machine heads are engineered for exceptional performance. They feature a double envelope gear design with a hardened steel gear, resulting in an amazing smooth and super strong tuning mechanism. Key specifications include a gear ratio unique for each string position (one turn-one tone), peg holes diameter of 35/64" (14mm), and string post diameter of 0.547" (13.9mm). Each machine head weighs 1.86oz (53g), and the set of four weighs 7.44oz (212g). The string diameter range is up to 0.98 gauge (or larger if taper-wound). This set includes 4 machine heads, mounting screws, and bushings.

Practical Uses and Benefits

Whether you're a professional musician or an avid hobbyist, the GraphTech RATIO Bass Guitar Machine Heads are a must-have. Their RATIO® patented gear technology incorporates different string gauges into the tuning equation, providing a balanced gear ratio for each string position. This results in predictable, precise tuning on every string, with a half-turn being a semi-tone. The smooth operation and strong construction make these machine heads ideal for both live performances and studio recording sessions. Upgrade your bass guitar today and enjoy the convenience and reliability of the GraphTech RATIO Bass Guitar Machine Heads.