Wolverine 3″ Standard Twist Knot Wire Wheel Brush provides an aggressive brushing action for general purpose deburring cleaning and surface preparation applications. Featuring Weiler’s 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. 1/2″-3/8″ arbor hole for use on bench/pedestal grinder and straight grinders. Provide an aggressive brushing action for general purpose deburring cleaning and surface preparation applications. Knot wire wheels with an arbor hole are intended for use on straight grinders and stationary machines such as bench or pedestal grinders and buffing lathes. Featuring Weiler’s 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. . .