√【Material】Made of solid brass, high quality, can work in high temperatures and pressure. √【Size】5/16" Hose Barb to 1/4" Hose Barb. √【Quantity】Package including 2PCS reducer barbed fittings and 4PCS hose clamps. √【Connetion】Hose Barb on both ends that can connect with two different ID hoses or tubings. Barbed retracting locks for easy slide-back connecting and disconnecting. √【Working Temperature&Pressure】Temperature range from -40 to +160 degrees F, Maximum working pressure of 150 psi.