Graph Tech PRB-4220-C0 4 String 2+2 Bass Ratio Y-Key Tuners

An easy replacement on 2x2 bass headstocks, these GraphTech Ratio bass tuners ensure smooth, equal turns across each string.

Graph Tech's calibrated & synchronized tuning system makes tuning and re-tuning your bass faster and more intuitive. Tuning on the fly has never been 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 E to G, the gear ratios are 36:1, 30:1, 20:1, and 18:1.

In order to achieve the higher gear ratios, ratios are the world's first machine heads using a double envelope gear design on higher ratios and a hardened steel gear. Amazingly smooth and super strong.
WARNING: Cancer and Reproductive Harm -

Dimensions and Weight in Packaging
Shipping Weight: 0.5 lbs
Shipping Dimensions: 5 x 3 x 2 in
Manufacturer Part Number (MPN): PRB-4220-C0

For support or warranty questions, please contact the manufacturer:
Phone: 800-388-7011


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