This is the 450 size Blackhawk first Micro Nitro Helicopter. Comparable in size to the T-Rex 450XL this all raw .15 size Nitro Machine powered by a powerful .15 size engine / muffler set ( included in kit ). The kit comes with many advanced features such as a built in cooling engine fan, one mount clutch, dual frame design and much more. Nothing was left out, you get a superbly built machine with quality parts and lots of all CNC upgrades and it all comes pre installed. Also, if you ever decide to go the Electric Route, an electric conversion kit will allow you to simply swap out the Nitro Engine with an electric motor. The kit balances perfectly ( very well though out CG ) and all installs seamlessly together. This is a real interesting unique Helicopter and HeliHobby is here to support it.