Features:1.Pneumatic composite should not be used for live swivel applications2.The Stainless steel gripping ring ensures excellent tube retention while the D seal3.Pneumatic Fittings are a compact one piece push-to-connect fitting.All items in the composite range are silicone free4.Body and collar are made of Nylon gripping ring is stainless steel, and D seal and O-rings are Nitrile5.within the fitting provides a positive seal on the O.D.of the tube in both static and dynamic positions, due to an optimized design of the fitting cavityPackage Included:5PCS