The Align Trex 500 Flybarless Rotor Heads X2 are designed for aerobatic and 3D flying, suitable for hobby grade pilots. These rotor heads by Align offer a Flybarless system for enhanced performance and control. Perfect for advanced RC enthusiasts looking for precision and stability in their flying experience, these rotor heads are of high quality and are compatible with the 500 size class of helicopters. Upgrade your RC model with these reliable and efficient rotor heads for improved manoeuvrability and excitement in the skies.