Buttweld | Male National Pipe Thread (MNPT) | Socket Weld x Threaded | Sweat x MIP | Threaded x Threaded | Threaded | 1-1/2" | 1-1/4" x 1-1/4" | 2" x 1/2" | 3/8" x 1/4" | 3/8" | 4" x 1-1/2" | 5" - 3" x 1-1/2"