★All in one box, include wrenches. Note: Some components are super tiny: diameter about 2mm to 3mm. Please make sure you can handle tiny components before purchasing.
★30 minutes will you assemble a working hot air Stirling engine. Plesae note this is a DIY product. One step wrong, engine might will refuse to work. If so, please contact us for replacement to try again. Thank you.
★Educational and fun.
★Main parts of the engine are not treated, you can paint them with color you like. You can also facilitate the groove on small flywheel to output energy generated. DIY.
★Great gift for those you love, for those fascinated in physics/mechanics or engines.