Weight: 14 LB . Size : 100 Grit . Buying large packaging is more cost-effective. Aluminum Oxide Sand Blasting Abrasive Media for Blasting Cabinet or Blasting Guns,can be used wet or dry. Aluminum oxide hardness of 9 on the Mohs scale,Ideal for the Removal of mill scale, paint coating,surface preparation of stainless steel, aluminum and wood, as well as etching glass. It is packed in a sturdy plastic bucket for easy carrying and use.