CleanDr Dust Remover 20 oz. Bonus Pack with Turbo Brush! Blasts Away Dust Safely removes dust and debris from electronic devices without leaving any residue; Multi-purpose, moisture-free, odorless duster is great for sensitive home and office electronics; Clean keyboards, computers, printers, copiers, audio/video components, phones, and other office equipment or electronic devices; Extension tube and Turbo-Brush attachment included for cleaning in hard-to-reach areas; Non-ozone depleting formula includes bitterant additive to deter inhalant abuse. Includes 2 cans, 10 oz. each, and Turbo Brush Air Can Attachment.