MADE IN THE USA: Weiler Power Cup Bushes are proudly made in the USA at our factory in Cresco, PA ROBUST CONSTRUCTION: Constructed with an internal steel plate that has equally spaced knot holes around the perimeter to minimize vibration and extend life CORROSION RESISTANT STAINLESS STEEL WIRE FILL: Featuring high-quality 302 stainless steel wire that offers durability and aggressive action along with corrosion resistance on stainless steels, aluminum, and other non-ferrous metals IDEAL FOR DEMANDING CLEANING APPLICATIONS ON RELATIVELY FLAT SURFACES: Heavy duty cleaning prior to welding, weld scale and corrosion removal, rust and paint removal, roughening, deburring USE ON RIGHT ANGLE GRINDERS: Fits most standard power angle grinders with 5/8"-11 UNC thread