Align H50119B 500Pro Metal Tail Rotor Holder Made using high end components and materials Years of knowledge in the flying RC industry Great for fun or commercial use This product is made from high quality materials, and it is designed for lasting performance Use Align tools, replacement parts, and accessories to get the most out of you Align Helicopters This is for use on products such as the Align T-Rex 500 Pro consult your user's manual for exact parts listing