Office Depot Cleaning Duster, 3.5 Oz, OD35152 Includes an extension tube for the hardest-to-reach spots Delivers a pressurized, concentrated blast of gas to remove unwanted particles from computer equipment Contains bitterant to help discourage inhalant abuse Office Depot(R) Brand Cleaning Duster, 3.5 Oz is one of many Computer Cleaning Supplies available through Office Depot