Accurate hole designing, screw fixation, stable and not easy to loosen. Lightweight designing, weighing only about 3.50g, not add burden to flight and is easy to store, portable. Adopting external expansion designing, not interfere with the flight pictures and provides safe flying Aluminum alloy, integrated molding, high strength, with cool appearance. Build in silicone protective pad, it will not scratch the UAV body and will not affect the installation of the PTZ.