🌟 Ignite Your Imagination with Every Spin! Crafted with premium materials for durability and elegance. Just fill, light, and watch it go—science made simple! Watch the magic of physics come alive with this educational toy! Ideal for science enthusiasts of all ages—make learning fun! Worry-free play with spare glass tubes and O-rings. Multicolor LED lights High-grade alcohol fuel CNC finished frame The Sunnytech Hot Air Stirling Engine Motor Model is an educational toy that demonstrates the principles of thermodynamics. Fueled by high-grade alcohol, it powers a multicolor LED while showcasing a beautifully crafted design made from aluminum alloy and stainless steel. This engaging model is perfect for science projects, classroom demonstrations, and as a thoughtful gift for curious minds.