4 x 36 Inch Sanding Belt for Belt Sanders, 3 Each of 40/80/240/600 Assorted Grits Sander Belts 32 pcs Aluminum Oxide Sanding Belt for Air Belt Sander, Woodworking, Metal Polishing It has good waterproof effect, and can be polishing with a water stone. Made from premium open coat A/O grain, delivering fast and long lasting sanding. Heavy X-weight cloth base, with high strength, high toughness, tensile strength. Suitable for Sanders & Grinders, provide the ultimate in performance, value, durability and versatility for wood, aluminum, non-ferrous metal, plastic, fiberglass polishing. Scope of application: Furniture and woodwork polishing. Machinery/metallurgy/leather/metal/light industry/grinding. Non-ferrous metal, plastic, fiberglass polishing. Size: 4x36 inch Grit: 40/80/240/600 Sanding Material: Aluminum oxide Package: 12pcs Package Included: 3pcs x 40 grit 3pcs x 80 grit 3pcs x 240 grit 3pcs x 600 grit