The second collaboration flight of Ai Inagaki: a flowing, wave-like design based on blue. Fit Flight AIR is about 33% lighter and thinner than the standard Fit Flight, with added flexibility and durability. Fit Flight fits with a simple push-in, keeps the vanes at 90 degrees and needs no shaft ring. A dedicated Fit Shaft is required (sold separately); a flight once fitted to a Lock shaft cannot be used on a Spin shaft.