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