Badger oxide abrasive is specially ground to a 220 grit. When used with the Model 260 Hobby Abrasive Gun, it creates an endless variety of effects in glass etching, or cuts monograms in wood or metal. Prep wood, metal and plastic surfaces and curves, hard to reach areas for refinishers. Realistic weathering effects can also be achieved. Aluminum Oxide tends to breakdown quicker in size and is less abrasive to the surface. Aluminum Oxide develops a "Working Mix" of grit sizes which optimizes the number of abrasive impacts on a surface--this translates to a much faster cleaning rate. For coarse grinding.