Hot Air Stirling Engine Electricity Generator Motor Physical Dual Engine Model with LED Bulb Dollar Flywheel Design Science Experiment with CNC Aluminum Alloy Base DIY Education Toy for Teacher Adults Kids School Office Decor Features: ★ Well-made Stirling Engine Mode: The whole body is made of metal, and CNC Aluminum alloy base with 4 anti-skid pads at the bottom of model machine, The fly wheel is made of metal, enhance the industrial texture. ★ Attractive LED Bulb: The flywheels will rotate rapidly, making the generator's Lamp bulb lighting. When the machine works, it will be very shocking and attracting eyeballs. ★ Easy to Play: No need to install any accessory, start to witness this conspicuous Science Experiment. ★ Great Educational : The glass tube and glass alcohol lamp easy to watch piston movement directly. The best choice gift for students, teachers, children, friends and colleagues. ★ Easy to Operate: Fill the alcohol burner with your 95% alcohol (we recommend this fuel) and light it. Let the light burn the round ended cylinder for about 30 seconds, then give the wheel a gentle push. Specification: Model: LL-008 Material: Aluminum alloy, glass Color: Silver/ Gold (Optional) Size: 195x105x135mm Weight: Approx 790g Fuel: 95% Alcohol Package Size: 20 x 11 x 15cm/7.8 x 4.3 x 5.9in Package Weight: 770g/27.1oz Packing List: 1 x Engine Model 2 x Spare Heating Glass Tube 2 x Alcohol Lamp Bottle 1 X 1M LED Bulb 2 x LED Bead 1 x 2M LED Light String 1 x Alcohol Dropper 1 x English Instruction Manual