Knot Wire Cup Brushes - Single Row For Fast Cleaning of Large Surfaces. Offers high-impact action while providing fast cutting and maximum cleaning action in severe applications. Heat-treated steel wire provides maximum fatigue resistance, long life and aggressive cutting action. Permanently fastened nut in a hexagonal hole clinched in place allows quick mount. Solid ring construction, perfect balance. Applications: Heavy-duty cleaning of large metal surfaces; Cleaning prior to welding; Weld scale and corrosion removal; Rust and paint removal; Roughening Surfaces; Deburring. Sold:1 Each