GraphTech RATIO Bass Guitar Machine Heads ~ 4+1 ~ Clover ~ Chrome Dhol The AS420 builds on the

The AS420 builds on the AS400 with an expanded frequency response

In addition

Frets:22 Medium profile hi-durability nickel silver frets ensure accuracy

Zhinga delivers a professional-grade experience for musicians and percussionists

GraphTech RATIO Bass Guitar Machine Heads ~ 4+1 ~ Clover ~ Chrome Dhol The AS420 builds on theThe PRB 5411 is a right handed set of RATIO Calibrated Machine Heads for BASS that use a 4 x 1 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. Headstock Configuration 4 x 1 Ratio Tuned Machine Heads: The New Standard In Tuning Technology Gear ratio: unique for each string position one turn one tone Peg