Hex Pipe Locknuts | Hex Pipe Locknuts | Dust Plug | Hex Reducer Bushings | Insert Barb x MIP Adatper | Threaded Flanges | 1-1/2" x 1-1/2" x 3/4" | 1-1/2" | 2" x 1-1/4" | 2" x 1/4" | 3/4" x 1/8" | 4" x 2"