... Backing: paper rolls Detailed Product DescriptionAbrasive Paper Rolls, Resin Over Resin, Electro-coated, Made of Aluminum Oxide and Silicone ... and silicone carbideBacking is kraft paper or latex paperResin over resinClassificationsAccording to the paper-based:C-wt, D-wt ... with the lowest competitive price . Abrasive Paper Rolls, Resin Over Resin, Electro-coated, Made of Aluminum Oxide and Silicone ...