Low Temperature Stirling Engine Motor Steam Heat Education Model Toy DIY Magnetic Connection Type Features: .100% brand new with high quality.The cryogenic air heat engine model-magnetic connection is a single-link structure, and the power cylinderis at the center of the upper end cap of the hot cylinder.The flywheel strut is a cylindrical aluminum alloy with a flywheel thickness of 3 mm.The power piston is made of aluminum alloy, and there is a fixed magnet in the top wire.The piston in the hot cylinder is a density sponge, and the pillar and the flywheel are connected by high-precision bearings.A cup of hot water can be used as a heat source to start the model operation.This model is in the form of parts, exercise ability, metal structure can be repeatedly disassembled.The product design is exquisite, the workmanship is excellent, not only can be used as teachingaids,ornaments,but also DIY, enjoy this magical energy conversion journey.The product is suitable for people over 8 years oldSpecifications:.Color: As Shown.Material: Aluminum Alloy + Quartz Glass.Product Dimensions: 9*9*13.5cm.Product Weight: 160g.Package Dimensions: 15*15*20cm    .Package Weight: 180g.Packing: Special CartonPackage Content:.1Set x Model