STEM Low Temperature Difference Stirling Engine DIY Toy Gift Decor Collection

Very fantastic craftsmanship, made with Metal AlloyBeing a Gift, or a Display on your desk or anywhere !The hotter it gets, the faster it goes!This low temperature stirling engine,It run on warm / cold surface, and it requires a small difference in temperatures to run.Description:Item Name: Stirling Engine Size: 102 X 102 X 125mmMaterial: Steel and GlassSpeed: up to 180-250 RPMStart Temerature Difference: 20 ?Weight: 250gFeatures:This Low Temperature Stiring Engine could be a great gift for your friends or families.It is almost ready to run: after the installation, put it on a cup of hot water, then it will run itself.Note:Can use pencil to lubricate all the connections,other oils are not recommended.Package Included:1 x Low Temperature Stirling Engine