QWinOut 2 Pairs 10x4.5 10x4.7 3K Carbon Fiber Propellers CW CCW 1045 1047 Props for F450 F550 DIY Quadcopter Hexacopter UFO 920kv Motor Color:1047 Feel / no sense of

Feel / no sense of dual mode

Minimum delay: 8 ms

12sec/60°

Instalattion has never been easier

it can still automatically emit 110 dB of dripping sound after 30 seconds of power failure

QWinOut 2 Pairs 10x4.5 10x4.7 3K Carbon Fiber Propellers CW CCW 1045 1047 Props for F450 F550 DIY Quadcopter Hexacopter UFO 920kv Motor Color:1047 Feel / no sense ofQWinOut 2 Pairs 10x4. 5 10x4. 7 3K Carbon Fiber Propellers CW CCW 1045 1047 Props for Quadcopter Hexacopter UFO 920kv Motor 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 2pairs, 2cw + 2ccw, please choose the size you want.