The Ken-Tool Rust Hog, No. 20167, is an abrasive tool that removes surface rust and debris on studs and flat mating surfaces of wheels, wheel hubs and brake rotor hats. The Rust Hog features a dense, aluminum oxide infused polypropylene abrasive material attached to a 4” hub used with a 1/2” drive electric or pneumatic impact tool. The body is 4.25” long, the abrasive pads have a 2” diameter and the center hole is 2.25” deep. The Rust Hog is safe to use on steel, magnesium and alloy wheels.