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 1 in Connector Type Threaded Hole Connector Size 5/8 in Operating Speed - Maximum 12 000 RPM Shank Length Not Applicable Color Not Applicable