Pricing mentioned is for EA. Requires a minimum buy of 1 piece. Knot Wire Cup Brush, 4 inch Diameter, 5/8-11 Arbor, .02 in Carbon Steel, Double Row; Hazmat=False; Features=Features a threaded nut, making for smooth, efficient operation on angle Grinders;Provides flexible brushing action and cost-effective performance in general purpose cleaning applications;Quickly completes rough surface-prep and debris-removal tasks; StandardPack=1EA; CountryOfOrigin=US; Arbor Thread - TPI or Pitch=5/8 in - 11; Diameter=4 in; Structure=Knot Wire; Trim Length=1 1/4 in; Type=Knot Wire; Wire Material=Carbon Steel; Wire Size=0.0200 in;