1-1/2in X 1/4in | Compression x MIP | Saddle x Compression | Socket Weld x Threaded | Threaded | 1-1/2" x 1-1/2" | 1-1/2" x 1-1/4" x 3/4" | 1-1/2" X 1/4" | 1/2" | 1/4" | 1" | 2-1/2" x 1-1/2" | 2" x 1-1/2"