3M Silver T27 grinding wheels offer an unbeatable performance-to-price ratio. They contain precisely shaped abrasive grains in the form of miniature triangles, designed to fracture as they wear. This continuously creates new ultra-sharp points and edges that dig into the metal like a knife, instead of merely abrading or roughening it. They thus offer a much longer service life than conventional ceramic abrasives. Discs ensure fast and consistent surface finishing during grinding and demanding removal of old coatings from stainless steel, mild steel, aerospace alloys, and other materials.