PRB-4400-CO 4-In-Line Bass Guitar Tuning Machines - Chrome Plated Y Key Tuners for Precision Tuning | Perfect for Electric Bass Guitar Upgrades & DIY Repairs

GRAPH TECH RATIO 4-IN-LINE BASS TUNING KEYS Y-Buttons Graph Tech's calibrated & synchronized tuning system makes tuning and re-tuning your bass faster and more intuitive. Tuning on the fly has never be easier! Each string position has its own calibrated gear ratio, so every string feels and reacts the same to any tuning adjustment. One full rotation of any key results in a one full tone pitch change (give or take). From Low B to G, the gear ratios are 76:1 48:1, 36:1, 25:1, and 23:1. To achieve the higher gear ratios, Ratio's are the world’s first machine heads using a double envelope gear design with a hardened steel gear. Amazingly smooth and super strong. CHROME Manufactured by Graph Tech #PRB-4400-C0