Check the listing for details. WEILER 97443 Double Row Cup Brush,Threaded Arbor 2FZ15. Condition: New. Listed at 151.14 USD. Double-Row Cup Brush, Product Type Double-Row Cup Brush, Quick Change System Not Applicable, Bristle Type Standard Twist Knot Wire, Bristle Material Carbon Steel, Brush Dia. 6 in, Wire Dia. 0.023 in, Bristle Length 1 3/8 in, Grit Not Applicable, Overall Length 5 7/8 in, Compatible Tool Type Right-Angle Grinder, Color Silver, Primary Material Application Carbon Steel, Connector Type Threaded Hole, Connector Size 5/8 In.-11, Operating Speed - Maximum 6,600 RPM, Shank Length Not Applicable The Weiler(R) grinder wire brush is made with high-tensile, heat-treated carbon steel wire. Its knot wire cup is ideal for tight operations, corners, and angle welds, curved surfaces, and pipe bevel cleaning. Double-row brush is for aggressive action in severe applications.