AGS Fittings Are Held To The Strictest Standards To Perform Flawlessly In Their Intended Applications. AGS Brass And Steel Fittings Are Comprised Of Tube Nuts, Unions (Couplers), Adapters, Elbows, Tees, Bushings, Connectors, Grease, Etc. Slide Clamp Onto Hose And Then Lubricate. Push Hose Onto Fitting Until Bottoming Out.