Features: Patent #: D782,757 S 20/22mm Wheel Stud Cleaner Light weight and balanced for easy, fast stud cleaning Enclosed design provides greater durability, strength and safety Use on steer, drive and trailer wheel stud Heavy duty .010 wire diameter stainless steel brush Independent brushes can be rotated for maximum brush life 1/2" drive for use with an electric or air tool Internal brush system Replaceable brushes Part # X-2757-WB Patent Pending Stud Brush Assembly (22mm & 20mm)