Pistol grip blow gun is a multi use blow gun constructed of durable zinc die cast with chrome plating. Accepts Milton #122, 6 extension or #123, 10 extension. Product Features:Maximum working pressure of 150 pounds per square inch10.0 standard cubic feet per minute at 100 pounds per square inch1/4 national pipe thread air inlet1/8-27 NPS nozzle threadConvenient hang hook