The Sidewinder is the most versatile cleaning tool for all sizes of ducts made of metal, flex, duct board, and even internally insulated types. It effectively dislodges debris and air scrubs the interior surfaces of any duct system. Two asymmetrical hole pattern balls were specially designed by Air-Care for the Sidewinder. Both designs provide effective cleaning of the top, sides and bottom of duct interiors and provide thrust to propel the Sidewinder deep into the duct and make operator controlled turns. The Sidewinder ball for metal ducts has a more aggressive action, while the soft-lining ball has an air-jet pattern that is less aggressive with increased air-washing action. Both metal and soft lining Sidewinder balls are included with the assembly. The Sidewinder requires a 2-stage compressor capable of 175 PSI at 14-25 CFM. Item #CE1542