This K&B Classic .45 Sportster R/C Nitro Airplane Engine is a brand new, assembled engine made in the USA. With a displacement of Big Blocks, it is compatible with 1:12 scale airplanes and runs on Nitro & Glow Fuel. The engine is specially made for hobbyists aged 17 and up, and its brand and model are KB 5900.In addition, the engine is compatible with Universal brands and is designed for use in Gas/Nitro Engines, Engine, Exhaust & Fuel Systems, RC Model Vehicle Parts & Accs, as well as Radio Control & Control Line toys. This engine is a must-have for airplane hobbyists looking for a powerful engine to enhance their flying experience.