H338 rubber hose fittings are designed to be used with H338 rubber airbrake hose. Male straight fittings feature a hose connector on one end and male pipe thread on the other for threading into internally threaded mating parts. They come in either the same size hose/pipe or alternating sizes depending on the application. They are designed to resist pull-out, are highly corrosion resistant, and have a maximum working pressure of up to 225 PSI.