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. Includes (2) 80 grit/coarse discs for leveling and heavy stock or paint removal, (2) 120 grit/fine discs for light stock removal and final sanding preparation before paint and (2) 220 grit/ultra fine discs for final sanding and surface preparation for stain/varnish.