Weiler® Dualife™ Roughneck® 7" X 0.020 Stringer Bead Twist Knot Wire Wheel Brush with 5/8" - 11 UNC arbor hole features a rugged knot-type construction which provides aggressive, high-impact action for severe applications and rotates at 9000 RPM. Stainless steel wire brush with 1 1/8" trim length virtually eliminates knot movement resulting in the most effective cleaning action, smoothest operation and longest wheel life. Offered in a variety of widths for efficient use in inter-pass weld cleaning operations, our entire line of cleaning brushes excel at removing slag, spatter and oxidation without damaging the filler material. It features knots which are twisted through its own hole and locked into an individual sprocket tooth. This prevents the knots from moving and allows them to have stronger striking action on the work surface. Stringer bead brush cleans surfaces in the same manner as sand blasting. Due to its high rotating speed, it separates surface contaminants from base material during which it does not remove any base material. Unlike non-woven, bonded and coated abrasives, wire brushes will not load when brushing soft materials or when used to remove paint and similar coatings. Application area includes cleaning rust, scale and oxidation, deburring, weld cleaning, roughening surfaces, edge blending and surface preparation. It is sold as 10 per pack.