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---1855*4
Carbon fiber reverse propeller---1855*4
Length:18 inch, Pitch: 5.5, Middle Hole Dia:4mm, Side Holes Dia: 3mm,
Distance between center hole of two side holes: 12mm