Emax 250 PRO Nighthawk Quad Drone FPV Quadcopter Carbon Fiber Replacement Solid Arm Emax 250 PRO Nighthawk quad drone FPV copter carbon fiber replacement solid arm 12K tow pure carbon fiber stitched plate 3mm thickness Reduced material removal to make structure of the arm stronger. All parts made in the USA! In Stock. Ships from San Antonio USA!