Features: The electric generator with 4pcs led lights, which will glow when machine and electric generator are working. The base plate is made of metal material, exquisite and beautiful. The bracket adopts zinc alloy material, which is stable and firm. Flywheel, cylinder liner and piston of mover adopt aluminum alloy finish turning, finish milling. The power cylinder and the hot cylinder are made of stainless steel metal, which are strong and durable.The axle sleeve is polished with brass, which is stable without lubrication. Easy Operation: After assembly, fill the alcohol burner with 95% alcohol, then light it. Burn the round end of heating tube for about 30-50 seconds, gently flip the flywheel, it will start to work. Help student to better understand this physics theory. It is mainly used in classroom teaching and laboratory experiment. A best choice gift to students, teachers, children, friends and colleagues. Specifications: Item Size: 180 * 90 * 85mm / 7.1 * 3.5 * 3.3in Package Size: 20.0 * 10.0 * 6.0cm / 7.9 * 3.9 * 2.4in Package Weight: 550g / 19.4oz Note: The package does not contain alcohol, you need to add it by yourself, please pay attention to safety and fire. Package List: 1 * Stirling Engine Model DIY Kit