The DuoClean Powered Lift-Away Upright Vacuum Cleaner from Shark combines two technologies to clean seamlessly from carpets to hard floors - this vacuum cleaner has two brush rolls working together to remove three different types of dirt from your floors and carpets, large, small and stuck on particles. There is a soft, velvet like brush roll that is directly in contact with all hard floors, removing stuck-on dirt, fine dust and large objects and when the Shark is used on carpets, the second bristle bar comes into play with the first brush roll, cleaning t