Maximize your finishing efficiency with RADNOR Aluminum Oxide Type 29 Flap Discs. Engineered for high-performance light stock removal, seamless blending, and superior finishing in a single application, these discs combine light-duty blending power with the smooth finish of a fiber disc. Each disc is built on a durable fiberglass backing, is available in 4", 4 1/2", and 7" sizes, fits 5/8", 7/8", and 5/8" - 11" arbors, and comes in 36, 60, and 80 grit options.