Engineered for ultra-rapid cut on carbon steel, 3M(TM) Fibre Disc 782C features 3M Precision Shaped Grain. With its outstanding cut, durability, and ease of use, this disc offers a major step up in performance over conventional fiber discs. Advanced abrasive technology makes it an excellent choice for tough applications including weld removal, blending and finish refinement. The 3M(TM) Ceramic Fibre Disc 782C is well-suited for edge chamfering, beveling, and removing carbon steel welds, mill scale, pits and imperfections, machining grooves, and more. 3M engineers started with 3M(TM) Ceramic Abrasive Grain and used 3M Precision Shaped Grain technology to generate triangular shaped grains that are electrostatically oriented on the backing to form sharp peaks and maximize cutting potential. These peaks act like individual cutting tools that slice through metal, and continuously shelf-sharpen as the points break off. The grains wear evenly and self-sharpen, reducing heat due to friction for improved life of other fiber discs, with less grinding pressure. The result is that 3M discs outcut and outlast conventional ceramic industrial abrasive disc on the market, maximizing productivity and minimizing operator fatigue. Fiber discs are heavy-duty discs ideal for weld removal, grinding, and blending large and small areas of metal surfaces. They feature a tough, stiff backing made from vulcanized fiber that resist wear and can handle tough grinding applications.