Midland Metal 640056 Adapter, 5/16-in Male JIC x 3/8-in Male O-Ring Boss, Steel

Midland Metal Adapter, Connection Size 1: 5/16 in, Connection Type 1: Male JIC, Connection Size 2: 3/8 in, Connection Type 2: Male O-Ring Boss, Steel, 1/2-20 x 9/16-18 Thread, 4500 psi, Additional Information: 4500 psi Non-Adjustable