Forney 72757 Wire Cup Brush, Knotted with 5/8-Inch-11 Threaded Arbor, 2-3/4-Inch-by-.020-Inch 2-3/4, Knotted wire cup brush, coarse, arbor 5/8-11, wire size Adds a great value Manufactured in China Ideal for fast, heavy duty cleaning of large surfaces Also for removing weld scale, rust burrs and spatter Designed for use on right angle grinders only