Cup Brush, Quick Change System Not Applicable, Bristle Type Crimped Wire, Brush Dia. 5/8 in, Wire Dia. 0.005 in, Bristle Length 1/4 in, Grit Not Applicable, Color Not Applicable, Connector Size Not Applicable, Operating Speed - Maximum 37,000 RPM, Shank Length 1/8 in, Package Quantity 12