Plug | Insert Barb x MIP | Socket Weld x Threaded | Sweat | Threaded | 1-1/2" x 1" x 3/4" | 1-1/4" x 1-1/4" x 1" | 1-1/4" x 1-1/4" x 3/4" | 1-1/4" x 1/2" | 2-1/2" x 1-1/4" | 3/4" | 3" x 1/2"