2-1/2in | 1/2 Couplings | Blind Flange | Dust Plug | Hex Reducer Bushings | Insert Barb x MIP Adatper | Male NST x FIP Adatper | Threaded Flanges | 1-1/2" | 1" x 3/8" | 3/8" x 1/2" | 4" x 2" | 4" x 3-1/2"