Hausler 450 SE V2 RTF Electric RC Helicopter 80% of the Kits Components are manufactured from Rigid High Precision Aluminum Alloy Auto-Rotation System and CNC Metal Tail Unit and Tail Holder are Manufactured from Rigid Aluminum, Giving a Greater Lifespan and Reliability Equipped with Three 9g Digital Servos and One 26g Digital Lock Tail Servo Newly Designed High Resolution Swashplate Belt Driven Rotor, which is Easily Adjustable for a more Stable Flight and Low Noise