Fit Flight is an innovative flight and shaft system. In most ordinary and common flight and shaft systems installation requires sliding fins into 4 narrow slots, and this old style method requires the use of many small parts for locked type flights and or unwanted holes in the flight itself making the flight more susceptible to falling off the shaft. Besides the fact that handling these small parts can be difficult or tedious, causing unnecessary stress and distraction to the player during practise or competition. The Fit Flight system was developed by Cosmo Darts as a superior alternative to the old system, and to help players elevate their game. It is the only flight used by many of the top U.S. Pro Players including Darin Young. These flights have been designed to his specifications. He debuted this brand new design at the 2016 PDC World Championship.