3M Flap Disc 546D provides a system for low-pressure grinding, small weld removal, finishing, and surface preparation with just one disc. The one-step alternative to bonded wheels and fiber discs, these discs run fast enough for stock removal but provide cushioning with the flaps for a soft finish. Flap discs allow one-step grinding and blending, saving time and cost. Alumina zirconia self-sharpens, provides extended life and more cutting power than aluminum oxide, reducing replacement costs. Flexible, X-weight cotton backing supports fast cut on light duty grinding and finishing applications. Resin bond prevents heat from weakening the abrasive and its adherence to the backing.