J.T. Baker 5010 10 lb Alum is a fast, versatile and economical cutting abrasive. This product can be used in wet and dry blasting applications for cleaning, deburring, etching and finishing. Aluminum Oxide is ideal for etching the surface of glass as it’s hardness is greater than glass. Aluminum Oxide won’t break down as fast as glass blasting media and has a longer cycle life than most blast media.