Cup Brush Product Type Cup Brush Quick Change System Not Applicable Bristle Type Crimped Wire Bristle Material Brass Brush Dia 5 in Wire Dia 0.014 in Bristle Length 1 1/4 in Grit Not Applicable Overall Length 4 5/8 in Compatible Tool Type Right-Angle Grinder Color Silver Primary Material Application Brass Connector Type Threaded Hole Connector Size 5/8 in-11 Operating Speed - Maximum 9 000 RPM Shank Length Not Applicable