Graph Tech Graph Tech - Ratio M/Heads Bass 2+2 Modern

Product Information:

The PRB-4220 is a right-handed set of RATIO® Calibrated Machine Heads for BASS that use a 2 x 2 configuration. In order to achieve higher gear ratios, Ratio are the world's first machine heads using a double envelope gear design with a hardened steel gear. Amazingly smooth and super strong.

Product Features:

• Gear ratio: unique for each string position - one turn-one tone
• Peg holes diameter required: 35/64" (14mm)
• String post diameter: 0.547" (13.9mm)
• String post length to string hole: 1.030” (26.1mm)
• Weight per single machine head: 1.86oz (53g)
• Weight per set of four: 7.44oz (212g)
• String diameter up to 0.98 gauge (or larger if taper-wound)
• Includes 4 machine heads, mounting screws, and bushings