serious pilots only
http://www.tmart.com/XKK123AS350Sc...

This is one of my favorite types of aircraft, a true collective pitch helicopter. That means it works just like a full sized helicopter and it means it can fly upside down and backwards, if you like stunts and scale aircraft, you will love the XK as350. XK also has a number of really nice low cost 3D CP stunt quads.