• Designed to clean corrosion on hub and wheel surfaces including wheel studs • Quick change multi-head design with popular sizes for cleaning wheel studs and grinding wheel hub • Includes 1/4” quick release style adaptor to suit both electric or pneumatic drills • Safe to use on all wheel type hub surfaces • Manufactured from heavy duty plastic resistant to most impact • Brush size: Ø13 (1/2") & Ø18mm (11/16") • Pad size: Ø23mm (I.D) x Ø50mm (O.D) 3 pieces & Ø15mm (I.D) x Ø43mm (O.D) 2 pieces • Main body: 185mm with 1/2" Sq. Dr. • 1/4" drive bit adaptor: 1/2" Sq. Dr. (male)