Merit No-Fil Sand-O-Flex Coated Abrasive Sheet, Series: PB273, 11 in Length, 9 in Width, P180 Grit, Fine Grade, Aluminum Oxide Abrasive, Anti-Loading Paper Backing, Open Coat, Applicable Materials: 300 Series Stainless, Aluminum, Brass, Bronze, Fiberglass/Composites, Hard Carbon Steel, Hardwood, Soft Carbon Steel, Softwood, Super Alloys, Titanium and Glass, B-Weight Backing Weight