Weiler 6" Polyflex Encapsulated Narrow Face 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. 5/8"-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.