Midland Metal 64001012 Straight Connector, 5/8 in 37 deg JIC Male Flared x 3/4 in Male ORB, Steel

Adapter, Connection Size 1: 5/8 in, Connection Type 1: Male JIC, Connection Size 2: 3/4 in, Connection Type 2: Male O-Ring Boss, Steel, 7/8-14 x 1-1/16-12 Thread, 2900 psi, Additional Information: 3600 psi Non-Adjustable