Package include: 5 pcs fittings. This Fitting is 3/8" barb to 3/8" NPT male, suitable for hose tubing with 3/8" ID. Material: Made of 304 stainless steel, strength and resistance to corrosion. Maximum working pressure of 2800 psi, Temperatures range from -868 to 1472 ℉/-500 to 800 °C Barbed retracting locks for easy slide-back connecting and disconnecting. Use this fitting for connecting tubing directly to your pump.It has NPT thread on one side, with a barb hose on the other. If you are not using a QD set or a ball Valve, this is a handy piece of Stainless for a direct connection.