Features and Benefits:Fits the Chrysler brake master cylinders;360 Degree Swivel Typical Automotive Style Air Hose Nipple;Expandable O-Ring for a Leak-Free Seal;Aluminum Body;Color Coded;Twin cap adapter for Chrysler vehicles . Comes with two piece 3-tab caps with expandable O-Rings. Expandable O-Ring ensures a leak-free seal. 1.125 - 1.320 Inch Diameter