5X Power propellers for X Class and Big Drone Racing dedicated to providing The Ultimate Drone Performance. The radical new design is focused on exceptional speeds and track agility during all race stages. Carefully selected airfoils and profile distribution effectively translate all available motor torque into a well-directed propeller thrust. Outstanding agility in both low and high RPMs. Textured turbulizing sections for extra performance. Package includes a set of adapter rings for the following shaft diameters: 1/8”, 3/16”, 5/16”, 3 mm, 5 mm, 6 mm.