Weiler 4" Standard Twist Knot Wire Wheel Brush provides a heavy-duty brushing action with some flexibility for demanding deburring cleaning and surface preparation applications on somewhat irregular surfaces. 5/8"-11 nut for use on right angle grinders. Engineered and manufactured to maximize performance and minimize operating costs in the most demanding surface conditioning applications. The use of superior construction, the highest quality materials and the most stringent manufacturing processes deliver the lowest cost-of-use and most consistent performance in heavy production environments.