All-metal DIY Assembly Hot Cylinder Stirling Engine Model Set Teenager Physical EducationFeatures:.100% brand new with high quality.The hot cylinder, hot cylinder sleeve, power cylinder sleeve and power cylinder are integrated and easy toassemble.The cylinder liner is a sheet-like heat dissipation structure.The alcohol lamp, bracket and bottom plate are designed in one piece.The two ends of the bracket are respectively equipped with alloy large flywheel and small flywheel.High-precision imported bearings are used between the flywheel shaft and the bracket.This model is in the form of parts, exercise ability, all metal structure can be repeatedly disassembled.The product design is exquisite, the workmanship is excellent, not only can be used as teaching aids, 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 + Stainless Steel.Product Dimensions: 16*6*7.45cm.Product Weight: 460g.Package Dimensions: 20*12*12cm .Package Weight: 480g.Packing: Special CartonPackage Content:.1 x Base Plate.1 x Flywheel.1 x Cylinder Kit.1 x Heating Tube.1 x Piston.1 x Piston Bar.2 x Connecting Rod.1 x Fuel Shield.1 x Sealing Panel.1 x Cylinder Pad.1 x Flywheel(S).1 x Flywheel Axis + Rod (4x27).1 x Driving Piston.4 x M3x4 Screw.4 x M4x6 Screw.1 x Hose Connector.1 x Axis (2x8).1 x Axis (2x10).1 x O Ring.1 x M3x3 Fastener.2 x M3x5 Fastener.2 x Pad.1 x Flame Wick.1 x Fuel Filling Tool