Low Temperature Stirling Engine Motor Steam Heat Education Model Toy KitFANTASTIC SMART THING WITH EXTREMELY WELL MADE WHICH RUNS LIKE A DREAM----The engine is produced with high quality material and elegant workcraft. this engine adopts mirror surface stainless steel for the base, glass cylinder liner, zinc alloy flywheel. All the parts have done surface treatment to avoid rusting. Oil-free.Size:12*10*10cmOPERATION EASILY----Pour a cup of hot coffee, put the on the cup, it run magically. When it slows down, the coffee temperature is suitable for drink. Enjoy physical powertrain mechanism display and coffee. It also can work on top of ice cube. Some guys put the on cup of hot water and put small ice cubes on the upper plate. This makes the temperature difference much bigger than normal, then it runs even more fast and crazy. Just enjoy the toy!PRIORITY GIFT OPTION FOR MANY APPLICATIONS----It is an amazing and fantastic product at this price. Its elegant gift package makes it spruce up and presentable. It has a wide range of application as, great gift for Kids' science project, Physical/mechanical learning, teachers Demo props on the class, birthday gift for friends, families, parents, kids, etc. Many of our customers come from school, colleague, etc.AMAZING CONVERSATION PIECES ON YOUR DESK----It's funny to see people's looks and reactions when they squeeze a little shot for this engine. Put it on the cup which full with hot waters, give the flywheel a gently push, and get the flywheel going, and then it works like charm. All of your guests want to know what happened, ice-breaking success. What a marvelous toy!Remarque : les donnes sont toutes mesures manuellement, veuillez autoriser une erreur de 1 3 cm, en raison de la diffrence de lumire et d'affichage, il y aura une certaine diffrence de couleur, l'objet rel reu prvaudra.