Feature : 1. The innovative design creatively combines a Stirling engine model with a toy car. 2. The model with a Stirling engine provides power to drive the car and allows you to play in different ways. 3. The product itself has been assembled and can be used directly, which has a high collectors value. 4. Exquisite appearance, fine polishing, not easy to rust and discolor, with highgrade texture. 5. The socket is used to fix the ethanol lamp, safe and reliable, and widely used in science projects and physics/mechanical science. 6. By operating the engine, you will intuitively understand the working principle of the Stirling engine and deepen your interest in physics. 7 . It is also a good teacher demonstration prop, suitable for friends, family, kids, etc. Specification: Item Type: Stirling Engine Material: zinc alloy Size: Approx. 15.8 x 11.4 x 9 cm / 6.2 x 4.5 x 3.5 in Purpose: With manual operation, you can observe the whole working process of the Stirling engine, understand the Stirling principle more intuitively, and broaden your interest in learning physics Operation method: when working, put the model in a horizontal position, pour ethanol into the ethanol lamp to ensure safety, and then turn on the ethanol lamp. After heating for 1 to 2 minutes, the lamp heats the piston tube, the dry air expands to generate energy, and the car starts to move. (Use 95% ethanol) Package List: 1x Stirling engine 1 x ethanol lamp 1 x Ethanol pad 1 x Screwdriver 1 x key 1 x tweezers 3 x elastic cord (2 pcs. installed on the product)