Cup Brush Product Type Cup Brush Quick Change System Not Applicable Bristle Type Crimped Wire Bristle Material Bronze Brush Dia 4 in Wire Dia 0.02 in Bristle Length 1 3/8 in Grit Not Applicable Overall Length 3 7/8 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 10 200 RPM Shank Length Not Applicable