Durable zirconia alumina grain provides good cut and life for all-purpose work Type 29 conical flap disc with angled, polyester/cotton flaps provides greater surface contact Fiberglass/resin backing plates offer high strength, ability to absorb vibration and increased operator comfort Best choice when speed of job completion and stock removal are primary considerations Good choice for coarse grit blending, deburring, and stock removal Bevel, blend, deburr and remove stock with high speed and efficiency using Metal R828 coarse grit conical flap discs. Engineered with angled polyester/cotton flaps, a high surface area and a durable zirconia grain, these long-life, Type 29 flap discs work great on edges and contoured surfaces and efficiently cut titanium, super alloys, cast iron, and soft-carbon, and 300 and 400 series stainless steels. Featuring the most popular backing plate configuration on the market, these fiberglass/resin-backed flap discs are strong and lightweight, and they also absorb vibration, enhancing operator comfort. Package of 10.