Motion Pro is dedicated to producing the most versatile, unique and durable products for professional and home use. Motion Pro tools are designed to be simple to use, yet durable enough to withstand the harshest conditions. One of their goals is to offer tools of convenience. Do it right the first time with Motion Pro Tools. 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 mm x 0.75 mm), 2 idle screws with lock nuts and instructions. Note: Drill press or mill should be used to drill holes in the carburetor bodies.