ture Stirling, engine motor, toy, steel motor, educational model toy, steam engine, Stirling engine kit, low-temperature Stirling, steam engine motor, low-temperature type, long-lasting rotation, toy, educational model, educational toy, birthday, present

[Easy to use] A Stirling engine that can start working with a small temperature difference! Place it on hot coffee or cold ice water to create a temperature difference, and when you rotate the wheel a little by hand, it will continue to spin on its own We will promptly exchange it.