Multiarch structure, collision resistant and resistant, and upgraded for safercollision resistance Connected from beginningto end, stable and anti shaking The front and rear circlesare connected and integrated, reducing resonance and making it more stable Isolating theblades and protecting the propeller can greatly it from people or objects Snap structure, easy and fast installation and disassembly After precise calculation and repeated testing, this lightweight, anti-collision, and resistant anti-collision rings have been developed