Cup Brush, Product Type Cup Brush, Quick Change System Not Applicable, Bristle Type Crimped Wire, Bristle Material Abrasive Nylon, Brush Dia. 3 1/2 in, Wire Dia. 0.035 in, Bristle Length 1 1/2 in, Grit 180, Overall Length 3 9/16 in, Compatible Tool Type Right-Angle Grinder, Color Silver, Primary Material Application Carbon Steel, Connector Type Threaded Hole, Connector Size 5/8 In.-11, Operating Speed - Maximum 12,000 RPM, Shank Length Not Applicable