Oatey 31321 180 Grit Open Mesh, 1.5" x 10 yd. Made from lightweight, strong, meshed Polyester nylon material Cleans, polishes and deburrs Copper pipe and fittings (not included) Resists corrosion For wet and dry Copper Piping (not included) Made of an open nylon fabric with a phenolic resin adhesive which provides a rugged, waterproof aluminum oxide cloth of superior quality For working with copper, brass or aluminum. Packed in a dispenser box for clean storage Fully waterproof and may easily be cleaned with water for repeated use