QWinOut 12x3.8 3K Carbon Fiber Propeller CW CCW 1238 CF Props Blade For RC Quadcopter Hexacopter Multi Rotor UFO
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
The Bore Dia is 6.3mm,With 4 pcs washer,2 pcs 5mm,2 pcs 6mm