Plugs and Clean Outs | Male National Pipe Thread (MNPT) | Socket Weld x Threaded | Sweat x MIP | Threaded MIP | Threaded x Threaded | Threaded | DWV | 1-1/2" | 1-1/4" x 1-1/4" | 1" x 1" x 1/2" | 1" x 3 | 3/8" x 1/4"