These fittings are designed to be used on thermoplastic, non-wire reinforced hose.  Used on SAE 100R7 and SAE 100R8 hoses, these fittings are available in JIC, SAE, O-Ring face, and SAE O-ring boss threads.  Made in steel, stainless steel, and brass.  Used on Aeroquip Polyon Series hose, Synflex, Weatherhead H435 and H436, Parker Parflex, and Gates TH7 and TH7NC.