?HIGH HARDNESS?Brown fused aluminum oxide is a mineral with a hardness of 9 on the Mohs scale (just below diamond), our aluminum oxide blast media will clean etch on all types of surfaces including glass, granite, marble, ceramic and steel for fast, effective rust removal. ?LONG-LASTING?Aluminum oxide blast media won't break down as fast as glass blasting media and has a longer cycle life than most blast media. Lasts 10 times longer than silica and save your money. ?ECO-FRIENDLY?We provide you sand blasting media with strict quality standards, no free silica, 100% recycled of the sand blaster sand for metal, can be used wet or dry. ?PERFECT PACKAGING?We use a high quality white bucket for 8 LBS aluminum oxide blast media, you can easily carry and use it, without worry about damaged and leaked like carton. ?100% SATISFACTION GUARANTEE?If you are not satisfied with our aluminum oxide blast media, we will provide you a full refund or free replacement!