Midland Metal 540564 Expanding Pipe Adapter, 3/8 in MPT x 1/4 in FPT, Steel

Pipe Connector, Connection Size 1: 3/8-in, Connection Type 1: Male NPTF, Connection Size 2: 1/4-in, Connection Type 2: Female NPTF, Steel, 3/8-18 x 1/4-18 Thread, Maximum Operating Pressure: 3000 psi, 375 deg F Operating