Feature: 1. LED LIGHTS, WITH MOTOR MOUNTING: The stirling engine is equipped with LED lights. Due to the heat of the premium alcohol, the engine will run and generate electricity. The power will run through the wires and drive the LED lights to emit light. This is a very interesting and imaginative toy. 2. METICULOUSLY CRAFTED: Plate made of CNC base plate, manufactured with fine milling; Stand made of molded steel, sturdy; Flywheel, ventilated piston, aluminum alloy fine carriage, fine milling, dual combination of texture and aesthetics. 3. PREMIUM MATERIAL: Rods made of stainless steel; aluminum alloy cylinder, power cylinder and dynamic connection group of power piston material fine milling surface after special treatment, high hardness. Do not run at high speeds and for long periods of time. 4. SIMPLE OPERATION: Fill the alcohol combustor with 95% alcohol (this fuel is recommended) and light it (support 75% medical alcohol, but its power will be weaker than 95% alcohol). Let the lamp burn the cylinder for about 20 seconds, then gently push the wheel. It can run continuously for more than 8 hours without damage. 5. STRONG PACKAGING: The glass tube is individually packed to avoid damage during transportation. Easy to remove the package and put it back in place. The wooden base is bare, you can let your imagination go wild and stain it with your favorite color. 6. MULTIPLE USES: It has a wide range of applications, can be used as a children's science project, physics or mechanics learning, teacher's classroom demonstration props, birthday presents for friends, family, parents, children and so on. Specification: Item Type: Stirling Engine Model Kit Material: Aluminum Alloy, CNC Base Plate, Glass Size: Approx. 195x105x135mm / 7.68x4.13x5.31in . Package List: 1 x Instruction Manual 1 x Main Engine 2 x Alcohol Cylinders 2 x Alcohol Lamp Wick Cord 2 x Alcohol Cylinder Cover 1 x Wire Clamp LED Bulb 1 x Dropper 2 x Light Bulbs 2 x Glass Tubes 1 x String Lights Note: Manual measurement please allow some error.