The Male Prest-O-Lite x 1/4 Female Pipe Thread is a propane fitting designed to connect a POL valve on a propane tank to an FPT (Female Pipe Thread) connection. This adapter ensures a secure, leak-free transition between propane cylinders, regulators, hoses, and other gas system components. Made of durable brass, it is widely used in LP gas applications, including grills, heaters, RVs, forklifts, and industrial propane systems.