As it is named, these molded plastic flights are designed with dimples similar to Golf Balls. The dimpling on the fins reduces air resistance, therefore giving the flight more lift and making it go farther.These flights offer the advantages of a pre-molded plastic flight with out the need for a proprietary shaft. By maintaining the 90 degree angle they provide consistency in aerodynamic dart trajectory. The enclosed shaft slot prevents robin hooding and damage to the shaft.350 micron thicknessThese flights will work with any nylon, poly, or carbon fiber traditional 4 prong shaft.Aluminum or other metal shafts are not recommended