Stainless steel small cup brushes are for use on small angle grinders. Cup brushes come in knot wire for low to medium flexibility and aggressive cutting action, and crimped wire for light cleaning and where greater flexibility is required. A variety of threated arbors are available. For use with stainless steel and high-tensile alloys, non-ferrous metals such as aluminum, copper, brass, etc., and ferrous metals such as iron, steel, welds, cast iron, etc. Knot wire. Package of 6. *Note: 20% restock fee on all SAIT/United Abrasives returns.