9*5" 3K Carbon Fiber Propeller CW CCW 9050 CF Props Cons For DJI F450 F550 RC Quadcopter Hexacopter Multi Just fit for DJI Motor,DJI Model Adopts the high quality 100% 3K all carbon fiber board which imported from Japan improve material. Each pair of propellers has perfect dynamic poise and static balancing which balance by manpower. Especially improves the air-powered efficiency and aerofoil stability Carbon fiber forward propeller ---9050*1 Carbon fiber reverse propeller---9050*1 very strong and light weightFor DJI Quadcopter Hexacopter