Pair this Metal R828 coarse grit center mount fiberglass flat flap disc with a right angle grinder to handle stock removal, deburring and coarse grit blending on a variety of metal surfaces, including cast iron, titanium, bronze, super alloys, and soft carbon steels. Equipped with polyester/cotton flaps designed for use at angles from 0 to 15 degrees, the disc features a strong zirconia alumina abrasive that provides outstanding cutting action and durability. The tough yet lightweight fiberglass and resin backing plates enhance comfort during operation by absorbing vibration, and it's an economical Type 27 option.