AF Super Duster Non-flammable high pressure airduster | AF's most powerful airduster for blowing dust and debris from inaccessible areas of computer and office equipment | Perfect to remove dust and debris from hard to reach places | Ideal for dusting surfaces most fouled with one touch | Suitable for all types of dust in office equipment, computers, keyboards, printers, fax machines and photocopiers | 4 x Standard blast strength | Non-flammable | Non-invertible