Open-coat, resin-bonded aluminum oxide abrasive provides long life workmanship and fast material removal on recommended wood and other surfaces.Widely used in artificial stone, furniture and wood products, metals, automobiles, circuit board, ship, sheet metal, wood, surface coating, the glass fiber plate, computer casings and other many products of rust, leveling, polishing, mirror and so on. Items of grinding and polishing.Durable hook-and-loop backing bonds firmly to sanding pad.Coarse 600 grit discs for fast finish or stock removal.