Weiler® Wheel Brush, 3 in Brush dia, 3/8 in Face Width, 1/2 to 3/8 in Arbor Hole Size, Standard/Twist Knot Filament/Wire, 0.0118 in Filament/Wire dia, Steel Fill, 5/8 in Trim Length, 25000 rpm Maximum, Unthreaded Arbor Attachment Weiler® 08004 Wheel Brush, 3 in dia Brush, 3/8 in W Face