Size - 1-1/4" Hose Barb x 1" Male NPT Material - Made of Stainless Steel 304, strength and resistance to corrosion. High quality, can work in high temperatures and pressure. Connetion - barbed fitting connects to hose on one end and has an NPT male connector on the other. Barbed fitting creates a tight seal on flexible and semi-rigid hose when used with a hose clamp or crimp sleeve or ferrule. Working Temperature - Temperatures range from -40 to 160 ℉. Application - This adaptor is suitable for fluid handling applications, including fertilizers, herbicides, acids, some solvents, liquid waste, saltwater, and cooling water. Hose fittings connect, control, change the direction of flow, and terminate the flow in piping and hose systems.