Midland Metal 6400106 Straight Connector, 5/8 in 37 deg JIC Male Flared x 3/8 in Male ORB, Steel

Adapter, Connection Size 1: 5/8 in, Connection Type 1: Male JIC, Connection Size 2: 3/8 in, Connection Type 2: Male O-Ring Boss, Steel, 7/8-14 x 9/16-18 Thread, 3600 psi, Additional Information: 4500 psi Non-Adjustable