View product detail page of 6 In. Wheel Dia. 5 / 8 In.-11 Arbor Carbon Steel Knotted Wire Cup Brush. 6 In. Wheel Dia. 5 / 8 In.-11 Arbor Carbon Steel Knotted Wire Cup Brush 6 In. Wheel Dia. 5 / 8 In.-11 Arbor Carbon Steel Knotted Wire Cup Brush Code: WB511