PowerMall 9 inch 2 Pairs(4pcs) self locking carbon fiber propeller for DJI Phantom Vision 2 motor(black) Convenience:self-tightening carbon fiber propeller produced by the strong and light weight carbon fiber,and it is easy to install. Efficient: carbon fiber props are lighter and stronger so that it increase its flying efficiency. They are specifically made for Phantom 2 and Vision and all parameters are the same as the factory Phantom 2 / Vision props. Color: Black ; material:Carbon Fiber; Strong and light weight, easy to install