Aluminum Oxide is a dental grade abrasive that comes in 45 micron, 280 grit, that can be used for micro abrasion in dental applications and used for divesting and cleaning appliances. It is a fine-grade, non-contaminating pure aluminum oxide for use in pressure blasting systems and airbrushes. It is 99.42% (white) pure electro-fused Aluminum Oxide. This product is only available for purchase in the U.S.A.