The X431 Standard for metal delivers excellent finishing results when roughing edges and weld seams, as well as on coarsely ground metal surfaces. Its abrasive surface made of high-quality zirconium oxide reinforced semi-precious corundum grain is robust, wear-resistant, and ensures a uniform surface finish. The sturdy backing material X-fabric provides work stability for clean and consistent results. The full synthetic resin bonding of the abrasive grains ensures durability under heavy use. The backing plate is available in both angled and straight versions, and is made from either fiberglass or plastic.