Check out the unedited simple challenge flight video of Big Coaxial EC-135 Colco Heli in our apartment area. This is very stable and very smooth flying helicopter, totally suitable for Beginners. You wanna start learning to fly helis, this is one best choice. Dealers and distributors wanted for colco good quality coaxial helis. Contact [email protected] for business and inquiries. Comments and feedback welcome at [email protected] or [email protected]. Don't forget to check , , , , and Cheers