Single Row Heavy-Duty Knot Wire Cup Brush, 2-3/4 dia, 5/8 to 11 UNC, 0.02 StainlessKnot wire cup brush provides heavy duty, aggressive brushing action Best suited for demanding cleaning applications on flat surfaces Ideal tool for removing surface rust and light corrosion from bevel ends prior to welding. Specifications Anchor Brand Catalog NO Applicable Materials Rust; Paint; Oxides; Scale Applications Cleaning; Removal; Deburring Arbor Thread TPI or Pitch 5 8 in to 11 UNC Big Catalog YES Brand Weiler Bristle Diam 0. 02 in Catalog