Wolverine 4″ Cable Twist Knot Wire Wheel Brush provides the most aggressive brushing action for general purpose 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. 5/8″-11 nut for use on right angle grinders. Provides the most aggressive brushing action for general purpose cleaning and surface preparation applications. Knot wire wheels with a threaded nut are intended for use primarily on small and large right angle grinders. 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. . .