3M Scotch-Brite™ Roloc™ Surface Conditioning SC-DR discs allow you to perform blending and finishing simultaneously, saving you time. They have the 3M Roloc quick-change system for easy and fast replacement. They are ideal for removing burrs from edges. Other uses: rust removal and cleaning of flat metal parts, removal of discoloration and sealant residues, surface preparation after weld removal before surface treatment or painting, reduction of roughness after grinding, removal of small welds of the highest strength class.