... Paper Rolls, Resin Over Resin, Electro-coated, Made of Aluminum Oxide and Silicone Carbide Backing: paper rolls Detailed Product DescriptionAbrasive ... Paper Rolls, Resin Over Resin, Electro-coated, Made of Aluminum Oxide and Silicone CarbideSpecifications/Special Features:Materials:brown aluminum oxide ... Abrasive Paper Rolls, Resin Over Resin, Electro-coated, Made of Aluminum Oxide and Silicone Carbide