The Diablo's 5" fiber discs are engineered for fast and efficient material removal, featuring an 80-grit aluminum oxide blend that delivers extended sanding life and superior performance. Designed for moderate stock removal, these discs are perfect for surface prep, wood material removal, and weld blending. The high-performance coating minimizes pitch build-up and clogging, allowing for consistent productivity. With a strong resin bond for added durability, these fiber discs ensure long-lasting use across multiple surfaces like wood, plastics, and fiberglass. Requires a backing pad for attachment to grinders or sanders. Comes in a convenient 4-pack.