Air dusters are perfect for removing dust, dirt and crumbs from sensitive equipment and hard to reach areas. The compressed gas does not leave a residue so the air duster can be sprayed without leaving a potentially harmful liquid on expensive equipment. Blast debris from laptops, keyboards, printers, photographic and video equipment in seconds. Each air duster is supplied with an extension tube for improved performance. Powerclean Standard is HFC free. For best results use in short, sharp bursts.