Weiler 3" Polyflex Encapsulated Small Diameter Crimped Wire Wheel Brush features an encapsulation that gradually wears away to expose a consistent short trim for higher aggression, controlled brushing action and longer life. 1/2" arbor hole for use on straight grinders, bench/pedestal grinders and buffing lathes. Featuring Weiler's solid ring construction, these radial brushes are available in heat-treated steel, type 302 stainless steel and brass wire for use in a wide variety of applications. 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.Made in USA