A set of four guards protecting the DJI Phantom 3 Professional and Advanced quadrocopter propellers. • protect the blades reducing the risk of breakage • light and durable • suitable for use with 9 "propellers (9" length) • in addition, there is a cable that protects you from entering the objects between the covers • kompatybile with DJI Phantom 3 Professional and DJI Phantom 3 Advanced