Ultra Duster Canned Air Net 10 Oz 6-Pack Blast away any dust, dirt, and unwanted microarticles from computers, keyboards, printers, and other electronic equipments. Is 100% ozone safe and containers no CFCs (Freon). Contains a bitterant additive that discourages potential abusive and misusage of the product by making its contents unpleasant to inhale Usually ship in 1 business day