The Mueller-Kueps Wheel Hub Grinder Type 1, 1/2" Drive, No. 433 500, is designed for cleaning the wheel centering device and the attachment face between wheel and hub. It quickly and easily removes stubborn corrosion residue. The Wheel Hub Grinder is optimized for use with an impact gun, has a processing time of three to 25 seconds per hub, and works best at lowest rpm. It offers a maximum speed of 500 rpm.