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