Norton ProSand Sheets (68540) are best suited for general purpose deburring and blending, it is tough, economical, and fracture resistant. Commonly used on ferrous alloys, high tensile materials, and wood. Paper backing materials are durable and commonly used in automotive and woodworking applications. Coated abrasives can be used from sanding to polishing for most applications. They consist of a thin layer of abrasive adhered to film, paper or cloth. Features. 100 Grit Aluminum Oxide Sanding Sheet. Pack of 6. Size 5.5 x 4.5 in.