Good quality propeller 

High toughness ABS material, not easy to break, players can be assured to use

Landing Gear

Use large sponge, durable, good cushioning force.

mooth wing

through the main steering gear control activities inside the large wing

vertical tail rotor blades

By vertical tail rotor blades control the direction of flight, to achieve steering circled flight direction to maintain stability

Horizontal tail rotor blades

Elevator control activities by the horizontal tail, used to keep the plane stable in flight