This is a set of high performance fly bar paddles from KB Dream Designs for the T-Rex 450 and other helicopters using a 2mm fly bar. Finally, extreme 3D maneuvers with stability! KBDD paddles also provide rock solid performance for FAI or scale flying. These paddles weigh approximately 3.5g and are weight matched to within .05g. The front fly bar hole is threaded and will be the one most preferred. The rear hole should be used at your own risk as our pilots flew the most aggressive 3D maneuvers using the front hole. The rear hole can easily be threaded with the fly bar taking care to remove the cuttings as you go. These are Black in color.