This Disposable Air Duster from Dust-Off contains 10 oz of compressed air for potent dust-removing power. Use in your home or office to clean your keyboards, CPUs, laptops, and desk areas. This compressed air duster is useful for removing dust from window blinds, collectibles, sewing machines, holiday ornaments, craft projects, silk flower arrangements, and more. An extension tube is included for accessing hard-to-reach places and the duster contains a bitterant to discourage inhalant abuse.