The R444 Expert for Metal creates an impressive surface finish on metal surfaces. The stable backing plate made of vulcanized fiber allows for consistent and durable work. The semi-precious corundum grain makes the disc particularly suitable for metalworking. This product is designed for deburring and preparing welding work on carbon steel, structural steel, non-ferrous metals, and cast iron. It is also ideal for removing discoloration, deposits, and surface defects. The full synthetic resin bonding of the abrasive grains to the vulcanized fiber backing ensures high working stability and optimal results.