... , Silicon Carbide, Aluminum Oxide 2. backing: X/Y-weight cloth 3. Bond: resin Aluminum Oxide Cloth Belt:(1)Grain:aluminum oxide(2)Bond ... :resin over resin(3)Backing:X/Y weight cloth(4)Coating:closeGrit:24-36-40-60-80-100 ... plates,nonferrous and ferrous metal plates,and wood,etc. Sand cloth belt