This is a vintage K&B Stallion 35 control line airplane engine with steel cooling fins aroung the cylinder. This engine is new and never been run. There is some evidence it may have been mounted at one time. It comes in the original K&B aurora box. The box depicts a Torpedo engine on the top but the side is label is factory stamped 'Stallion 35 Stock No. 9041'. Comes with decals and operating instructions.