TOZO Quick Release guard circle Propellers Props Protectors Bumpers for DJI Phantom 4 Quadcopter TOZO Quick Release guard circle Propellers Props Protectors Bumpers for DJI Phantom 4 Quadcopter No needed screw, Easy to install and durable. With these protective cover can avoid your DJI Phantom 4 heavy crash or damage perfectly, no influence on the flight The accidently bump into trees, hit walls, or any other obstacles, your phantom will always keep balanced. 4pc white