3 X 21 in sanding belts 36 grit Our belts work exceptionally well with lite and non-ferrous metals, blending welds, fiberglass, plastic, and rubber. Each belt flaunts an X-weight clothed backing, and possesses a strong resin on resin bond with well crafted seams for long lasting results. > The 3”x21” sanding belts feature a heat and moisture resistant material, and were designed with expertly crafted seams that won’t break under pressure. > Made with our superior X-Weight clothed backing, an open coat aluminum oxide grain, and an impressive resin on resin bond that ensures long lasting performance > Works with an assortment of belt sanding machines and applications – providing a heavy duty stripping and sanding tool for wood, aluminum, fiberglass, rubber, plastic and non-ferrous metals SPECIFICATIONS: Abrasive Belt Size: 3-Inch x 21-Inch Grit Size: 36 Grit (Sandpaper is fairly coarse - Heavy Sanding and Stripping) Material: Premium Open Coat Aluminum Oxide (A/O) Grain Backing: Strong “X” Weight Cloth Backing Joint: Strong Butt Joint Construction Taokyid is a manufacturer of various high quality Grinding products such like woodworking, metal polishing , wood work accessories, and a wide assortment of OEM replacement parts. You may find what you need in our Taokyid Store.