304 stainless steel Hose Barb, which has low temperature resistance, high temperature ductility and low magnetic permeability.The reducer hose barb union is used for connecting a hose to a hose threaded of a different size,when used with a hose clamp ( included). The hose barb can be solid connected to the hose ,The pipe clamps can create a tight seal on flexible or semi-rigid hose.They are Commonly used to connect lines for air, water, fuel, oil and inert gases in a quick and simple way.