Wire Wheel Brush, Bristle Type Standard Twist Knot Wire, Bristle Material Carbon Steel, Brush Dia. 4 in, Grit Not Applicable, Face Width 1/2 in, Bristle Diameter 0.02 in, Bristle Length 3/4 in, Compatible Tool Type Angle Grinder, Connector Type Threaded Hole, Connector Size 1.25 mm, Operating Speed – Maximum 13,500 RPM, Shank Length Not Applicable, Color Not Applicable