Open-coat, resin-bonded aluminum oxide abrasive provides long life and fast material removal on wood and other surfaces.Ten-piece package of fine 120 grit belts for finer surface finishing.Anti-static backing for highest removal and consistent finish. Benefits Open-coat, resin-bonded aluminum oxide abrasive provides long life and fast material removal on wood and other surfaces Butt-splice construction for smooth running in both directions on portable belt sanders Cross weight backings provide durability and longer belt life Designed for superior performance on wood, metal, plastic, fiberglass and other materials Category No Grit 120 Mineral Aluminum Oxide Quantity 10 Size 3″ x 24″