RotorTech main rotor blades are are one of the greatest main blades ever designed. Years of rotor blade manufacturing experience is evident in the magnificent level of quality of craftsmanship. Blade weight spanwise and cordwise C.G.s are perfectly balanced. The 3D Sport airfoil has been optimized for rapid cyclic response and an overall dynamically stable blade. The RotorTech blades are available in a series of dimensions each designed for a specific application. The blades come highly recommended.