The basics Precision strength canned air duster. The benefits 52A Propellant (Defined as Non-Flammable). Ozone safe. Contains no CFC's. Equipped with concentrator for cleaning in hard-to-reach areas. The uses Many uses that include sewing machines, computers, keyboards, photo equipment, printers, watches, clocks, fans, audio equipment, electric razors, and desk tops.  The bottom line An all-purpose sterilized cleaner that removes dust, dirt and microscopic debris from hard to reach places.