Machine Works Jet Engine Build your very own working scale model of a turbofan jet engine. About: Dads Choice Awards 2017 - Highly Commended Equipped with jet engine sounds, this detailed battery operated replica has high and low pressure turbines, and see-through casing to observe the engine's moving parts. A fantastic introduction for kids to model building and engineering. YOU NEED TO SUPPLY: 3 x AA batteries Features & Benefits: build your very own working model of a aircraft turbofan engine. features independent low and high pressure turbine spools plays a recording of a real jet engine sound instruction manual contains fully illustrated step-by-step assembly instructions Time-lapse Assembly Video: https://youtu.be/m4_1BBYg-zg Engine Demo Video: https://youtu.be/hUVxkzddBbs