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. AFTER-SALES SERVICE: Your satisfaction is our priority. If our aluminum oxide blast media doesn't meet your expectations, we're here to make it right! Sand Blasting Media