ShareGoo F450 4-Axis Multi Rotor Airframe 450mm Drone Frame Airframe FrameWheel with Landing Skid Gear for Quadcopter Aircraft Frame Kits The F450 Quadcopter frame are built from very strong materials, these arms are made from the ultra strong material which provides better resistance to damage on hard landings High quality and strong ability of anti-fall, lower maintenance cost,it can achieve hovering, cruising, even rolling and other flight elements; Suitable for both beginners and senior players, can be applied for entertainment, aerial photography, FPV and other aeromodelling activities. Using optimized design to provide adequate installation space for the flight control systems and accessories Compact design with small numbers of components, you can assemble it by youself quickly and easily.