3M 10455 Sanding Screen, 11 in L, 9 in W, 220 Grit, Silicone Carbide Abrasive, Cloth Backing3M cloth sheet 481 W is an abrasive sanding cloth constructed on a heavy, screen backing that features closed coat construction for aggressive sanding action. The silicon carbide abrasive and flexible backing make this cloth an ideal product for dry applications such as metal surface sanding and stock removal. Unit: EA UPC: 051144104550 Model Number: 10455