Midland Metal 6410O812 Reducer/Expander, 3/4 in Male ORB x 1-1/16 in Female ORB, Steel

Reducer/Expander, Connection Size 1: 1/2 in, Connection Type 1: Male O-Ring Boss, Connection Size 2: 3/4 in, Connection Type 2: Female O-Ring Boss, Steel, 3/4-16 x 1-1/16-12 Thread, 3600 psi, 375 deg F Operating