Midland Metal 640065 Adapter, 3/8-in Male JIC x 5/16-in Male O-Ring Boss, Steel

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