Function: 1. It is easy to assemble and ma collector's value. It can be used as a pendulum or as an aid for school experiments. 2. Thermal energy is converted into mechanical kinesthetic energy of the motor and can be operated by hands to more intuitively grasp the principle of its low temperature operation and deepen interest in physics. 3. The bottom plate is made of brushed stainless steel, exquisite and beautiful. 4. Widely used in children's science projects, physics/mechanical science and demonstration props for classroom teachers. 5. Scientific projects of the general structure to ensure the integrity and stability of the system. Specification: Item Type: Stirling Engine Material: Stal List of packages: 1 x Hot Cylinder Piston 1 x Stainless Steel Cylinder 1 x Cold Cylinder Piston 3 x Nut 1 x Silicone Air Pipe 1 x Hot Cylinder Assembly 1 x Cold Cylinder Assembly 1 x connecting rod ventilation 1 x Connecting rod gaskets 2 x Buckle 3 x sealing ring (mounted on the product) 1 x Belt 1 x Engine 1 diode 1 x Screwdriver 1 x Hex Socket 1 x Large Flywheel 1 x Small Flywheel 1 x Rear Bracket 6 x Screw 1 x Large Bottom Plate 1 x Footrest 1 x Ethanol Tanks 1 x Lamp Cover 1 x wick