Fellowes&reg; - Air Duster, 152A Liquefied Gas, 10oz Can, Two Per Pack - Sold As 1 Pack - Use duster and extension tube to get to tight areas. Use duster and extension tube to get to tight areas. When used as directed, duster is moisture-, oil- and residue-free. Propellant is non-ozone-depleting and contains no CFCs. Not to be used on paper shredders or electrical motors.