Serrations on the stem become imbedded in the hose eliminating wicking and leakageThe shell extends beyond the stem to prevent cutting of interior wallsTapered ends of stem and shell protect hose when flexedCouplings provide tamper-proof static connection which cannot be broken without completely damaging coupling and hoseInternal expansion of stem to nominal ID of hose provides full flowBroad, firm grip of coupling extends hose life by making it possible for hose to withstand more flexingEconomical and trouble-freeSafety Notes: Reattach static wire if required.Hose service working pressure (including surges and spikes) is never to exceed the maximum recommended working pressure for the fitting.The assembly's (hose + coupling) maximum working pressure is the lesser of the hose rated working pressure or the coupling rated working pressure.