Socket Weld x MIP | Socket Weld True Union | Threaded True Union | Threaded x Threaded | Threaded | 300lb | 1-1/2" x 1-1/4" | 1-1/4" x 1-1/4" | 1" x 1/2" | 2-1/2" | 2" | 18" - 10" x 1-1/4" | 9.1" x 16.8"