Norton® Bear-Tex® Thin-Flex Non-Woven Perforated Roll, 30 ft Length, 4 in Width, Very Fine Grit Grade, Aluminum Oxide Abrasive, Applicable Materials: 300 Series Stainless Steel, 400 Series Stainless Steel, Aluminum, Brass, Bronze, Cast Iron, Composite, Copper, Ductile Iron, Fiberglass, Hard Carbon Steel, Hardwood, Iron, Soft Carbon Steel, Soft Wood, Tool Steel, Maroon, Performance Tier: Better.