Reducer Coupling | Gasketed | G 1/2 B x 1/2 in. Male National Pipe Thread (MNPT) with 1/4 in. Female National Pipe Thread (FNPT) | MIP Threaded | Socket Weld x Threaded | Socket Weld | Sweat | Threaded MIP | 2-1/2" | 2" x 3/4" | 4" x 4" x 2" | 6" - 5" x 1-1/2"