Hex Pipe Locknuts | Insert Barb x FIP | Socket Weld x Threaded | Threaded x Threaded | Threaded | 1-1/2" x 1-1/2" | 1-1/2" | 1-1/4" x 1" | 1-1/4" x 1-1/4" | 1-1/4" x 3/4" | 2" x 1" | 3" x 1-1/2"