Weiler® 12 in 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. Featuring Weiler® individual knot hole construction, these radial brushes are available in heat treated steel, type 302 stainless steel and bronze wire for use in a wide variety of applications. 1-1/4 in arbor hole for use on bench/pedestal grinder, die grinder, right angle die grinder and straight grinders. Weiler® Wheel Brush, 12 in Diameter Brush, 3/4 in Face Width, 1-1/4 in Arbor Hole, Standard Twist Knot Filament/Wire, 0.014 in Dia Filament/Wire, Steel Fill, 2-3/4 in Trim Length, 3600 RPM Maximum