X573 Best for Metal for a premium finish on metal surfaces. The X573 Best for Metal sanding sleeve achieves a top-quality finish on metal surfaces. The high-quality zirconia alumina grains remove material with utmost precision, resulting in impressive surface outcomes. Additionally, the extremely robust XY fabric ensures durability and consistently high performance even under the toughest conditions. The full resin bond of the sanding grains on the XY fabric guarantees optimal sanding behavior. This product is used for deburring, sanding, and preparing welding work on unalloyed steel, construction steel, non-ferrous metals, aluminum, and cast iron. It is also ideal for removing discoloration, paint, deposits, and surface defects.