Coupling | 1-1/2" in flush PMC | 2in | G 1/2 B x 1/2 in. Male National Pipe Thread (MNPT) with 1/4 in. Female National Pipe Thread (FNPT) | MIP Threaded | National Pipe Thread Male (MNPT) | Threaded MIP | Threaded | 1-1/2" x 3/8" | 1-1/2" | 1" x 1" x 3.4"