Socket Weld x FIP | MIP Threaded | Spigot x FIP | Threaded | 1-1/2" x 1" | 1-1/2" x 1-1/4" | 1-1/4" x 1-1/4" | 1-1/4" x 1/2" | 1/2" x 1/2" x 3/8" | 2-1/2" x 1-1/2" | 2" x 1" | 4" x 1-1/2" | 4" x 3"