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