Merit Surface prep discs are perfect to clean and remove imperfections on metal surfaces, clean built-up residue, deburr or finish a variety of surfaces, blend weld seams or create decorative finishes. The Merit Abrasotex surface prep discs are non-woven surface finishing products that have the versatility to tackle any job. These surface prep discs are made from non-woven synthetic fiber mesh, which is impregnated with abrasives and bound with resins.