3M™ Flap Disc 566A provides a versatile one-disc system for metal fabrication applications where durability is required for medium-weight grinding, small weld removal, finishing and surface preparation. Our 566A discs are for use with an angle grinder and provide a one-step grinding and blending solution.Use 3M™ Flap Disc 566A, featuring self-sharpening alumina zirconia that provides better longevity and increased cutting power over aluminium oxide. Run on a right angle grinder, our 566A discs are a one-step system for grinding and blending. The strong, Y-weight polyester-cotton backing offers flexibility and supports a fast cut on medium to high pressure grinding and finishing applications.