Larger-size (12oz) disposable can. Ground shipping only due to Air restrictions on compressed gas containers. Ideal for all sorts of cleaning....ie workstations, labs, repair benches, household use, on-location photography, etc. Provides potent dust-removing power for practically any task. 100% ozone safe. They are ideal for cleaning computers, electronic equipment, cleaning car interiors, craft preparation and cleaning, safe cleaning of collectibles, general household dusting and more. Computer cleaning dusters are often erroneously referred to as "canned-air". In actuality, these products contain a liquefied gas that acts as a propellant. As such, the pressurized blast delivered when using such products is actually the gas vapors mixed with air. Understanding this basic principal is important in recognizing that the misuse of this product can be dangerous. NOTE ON SHIPPING: Due to the fact this is an Aerosol container, and recent changes in shipping restrictions, this product can only be shipped via Ground service in the United States. No International orders will be accepted for this product. If you order other products along with this item via Air, this item will be shipped separately via ground service or withheld and credited to your account if your order is shipped Internationally.