... belts, flap disc, flap wheels, etc. for wood, metal, stainless steel 1. Aluminum oxide grain, for making sand belt, flap ... disc, flap wheel, for wood, metal, stainless steel polishing2. Silicon carbide grain, for making wide and super ... sand belt, for wood, metal, glass polishing3. Zirconia grain, for making flap disc, sand belts, for stainless steel polishing4. size : there ...