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