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