Weiler 12″ Wide Face Standard Twist Knot Wire Wheel Brush features four rows of tightly knotted wire that are ideal for use in automated cleaning processes such as removing light mill scale from metal rod and wire. 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. 2″ arbor hole for use on bench and pedestal grinders. Four rows of tightly knotted wire. Ideal for use in automated cleaning processes such as removing light mill scale from metal rod and wire. 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. .