SAIT 60058 Quick Ship, Aluminum oxide, closed coat, X-weight cotton. For general purpose sanding, grinding and finishing of ferrous and non-ferrous metal, wood, cast iron, ordinary and alloyed steels and stainless steel. United Abrasives is a world leader in manufacturing a broad range of grinding wheel, cutting wheel, coated abrasive, carbide bur, wire brushes, specialty products and much more.