The X431 Standard for metal delivers excellent finishing results when grinding edges, weld seams, and rough 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 wear resistance during heavy use. The backing plate is available in both angled and straight options, and can be made from either fiberglass or plastic.