The Sait Non-Woven Hook & Loop Sanding Disc is excellent for heavy deburring, removing weld spatter and blending tool/mill marks, and rust removal. The hook and loop fastening system allows for quicker changes with less downtime. The non-woven synthetic fiber is impregnated with abrasive grain for surface conditioning without damaging the material. The disc is for use on stainless steel, high tensile steel, ferrous and non-ferrous metals and fiberglass. Includes 10 discs.