Use for T-REX 470L., The 380 3G main blades are designed specifically for extreme 3D flying, featuring both high agility and excellent stability characteristics. The blades have brand new airfoil design, coupled with new painted graphics. In addition, the blades rigidity have been increased for better anti-torsion characteristics during flight. The new airfoil design effectively minimizes turbulence at the blade tips, reducing blade noise and power loss., *During the examination stage, we discover a tiny defective spot on the exterior part on this product, (this blemished part would not affect any function of the machine); therefore, we offer a better discount upon this product., Specification:, Shape: Symmetrical wing, Length:380x35mm, Width:5mm, Shaft Diameter:3mm , Weight: Approx 70g/set