For use with 1/4 sheet palm sanders, 1/3 sheet sanders, 1/2 sheet sanders and hand sanding in wood, metal, and plastics. Premium aluminum oxide blend designed for fast material removal and long sanding life. Clog-SHIELD, a high performance stearate coating, reduces pitch build-up and clogging for maximum productivity. ENDURA-BOND, a specialized high strength resin, provides superior grit-to-backing bond for extreme durability.