HD900B 900 Carbon Fiber BladesHD900B 900 Carbon Fiber Blades Product: Focus Shot: Package: Instruction: Specification: 3K Carbon Fiber Material.900 Carbon Fiber Main Blades are specially designed for professional agricultural helicopter. 900mm total length and semi symmetrical airfoil design offer optimal buoyancy for heavy payload flight. Moreover, its super lightweight and rigidity features that can effectively improve the torsion resistance during heavy payload flight also save