Wire Wheel Brush, Bristle Type Crimped Wire, Product Type Wire Wheel Brush, Bristle Material Nylon, Brush Dia. 4 in, Grit 180, Face Width 5/8 in, Bristle Diameter 0.035 in, Bristle Length 1 in, Compatible Tool Type Die Grinder, Drill Press, Pencil Grinder, Straight Grinder, Primary Material Application Carbon Steel, Connector Type Threaded Hole, Connector Size 5/8 in to 1/2 in, Operating Speed – Maximum 20,000 RPM