Blow Off Air Duster Defined as Non-Flammable is our all purpose sterilized cleaner that removes dust dirt and microscopic debris from hard to reach places Its ozone safeRecommended for. Computers Keyboards Sewing Machines Photo Equipment Cash Registers Printers Fax Machines Copiers Telephones Lab Equipment TVs VCRs Typewriters Vacuums Shredders Scanners Stereos Watches Clocks Mailing Machines Fans Audio Equipment Electric Razors Sports Equipment Musical Instruments Guns Desk Tops3.5 oz