Adapter 9/16-18 X 1/2 FJIC SWV X FIP ST ADPT

Adapter, Connection Size 1: 3/8 in, Connection Type 1: FJIC, Connection Size 2: 1/2 in, Connection Type 2: FIP, Steel, 9/16-18 x 1/2-14 Thread, Maximum Operating Pressure: 4000 psi, 375 deg F Operating