The T-Rex 500 from Align combines the best features of the T-Rex 450 and the T-Rex 600 into a package that is hard to beat in any electric powered R/C helicopter. Inheriting the stable flight characteristics of the larger T-Rex 600 and the maneuverability of the T-Rex 450, the 500 will do it all! Ultra lightweight Fiberglass frames and metal blade grips with thrust bearings are but two examples of the quality features designed into this great helicopter!