Wire Wheel Brush, Bristle Type Standard Twist Knot Wire, Product Type Wire Wheel Brush, Bristle Material Carbon Steel, Brush Dia. 4 in, Grit Not Applicable, Face Width 1/2 in, Bristle Diameter 0.014 in, Bristle Length 7/8 in, Compatible Tool Type Bench Grinder, Pedestal Grinder, Connector Type Round Shank, Connector Size 1/4 in, Operating Speed - Maximum 20,000 RPM, Shank Length 1/4 in, Color Not Applicable