Here you will choose which type of RC Airplane you would like. Here is a short description of the catagories below. RC Airplanes Ready To Fly or "RTF" means that the rc plane will come with radio equipment installed for you. RC Airplanes Almost Ready To Fly or "ARF" means that the plane is mostly built but you will need to provide your own radio equipment. RC Airplanes Bind N Fly or "BNF" means the rc plane has a 2.4 GHz receiver installed, simply provide your own 2.4 GHz radio and your up and flying. RC Airplanes Plug and Play or "PNP" means the plane is built just install your own radio and receiver and your ready to go. RC Airplane Kits means you will need to build the plane yourself and provide the motor, electronics, radio etc. Last but not least RC Airplane Parts will have everything you need to get your rc plane back in the sky quickly incase of a crash.