Features 1、It is easy to assemble and has collection value. It can be used as a pendulum or school experiment supplies. 2、The heat energy is converted into the mechanical kinesthetic energy of the engine, and it can be operated by hands to grasp the working principle of its low temperature more intuitively and deepen the interest in physics. 3、The bottom plate is made of brushed stainless steel, exquisite and beautiful. 4、Widely used for children's science projects, physics/mechanical learning, and demonstration props for teachers in the classroom. 5、Scientific designs of the overall structure to assure system integrity and stability. Specification Condition: 100% Brand New Item Type: Stirling Engine Material: Stainless Steel Package List 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 Seals 2 x Buckle 3 x Sealing Ring(Assembled on the product) 1 x Belt 1 x Motor 1 x 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 Foot Pad 1 x Ethanol Tanks 1 x Lamp Cover 1 x Wick