Product Features: Used to install a standard Mikuni idle adjuster into the carburetor body For use on Yamaha Banshee and Blaster models Idle adjuster is necessary if carburetor top has been replaced with a standard Mikuni cap Kit includes a drill bit (#6), thread tap (6mm x .75mm), 2 idle screws with lock nuts and instructions Drill press or mill should be used to drill holes in the carburetor bodies