Hose fittings are used to connect, control, change the direction of, and terminate the flow in piping and hose systems.Barb Hose Mender/Splicer Reduce adapter is for connecting a hose to a hose. Two Barbs connect with different inner diameter hoses. Made of stainless steel for corrosion resistance, ductility at high temperatures. Hose fittings are used in systems such as air compressors, automatic manufacturing operations, aircraft controls and tire installation in industries including agriculture, mining, road construction, firefighting, and aviation.