The Enerpac FZ1634 is a high-pressure adapter fitting with a maximum operating pressure of 10,000 psi and a connection from 1/2" NPTF Female to 3/8" NPTF Male. It is used for connecting hydraulic hoses, cylinders, components, power sources, tubes and gauges in a hydraulic system. Enerpac hydraulic fittings provide flexible, safe and leak-free connections.