Feature:1. [High Quality Material] Stirling engine model is made of high quality aluminum material and fine craftsmanship to avoid rusting of the model and prolong its service life.2. [Product Exquisite] This Sterling physics model is a exclamatory and fantastic product, not only is it beautifully styled, its elegant gift packaging also makes it gorgeous and stylish.3. [Easy To Assemble] You can assemble it with your friends and family or family kids to enjoy the fun of DIY and also to enhance the relationship between each other.4. [Wide Range Of Applications] It can be used as a great gift for children's science projects, physics mechanical learning, classroom teaching props, birthday gifts for friends and family.5. [Intuitive Presentation] Through hands on operation, you can observe the whole engine operation process and master the working principle of low temperature Stirling engine more intuitively.Specification:Item Type: Engine ModelMaterial: AluminumRange of Application: Gifts, Scientific Toys, Physical ModelsGross Weight: Approx. 241g/8.5oz.Package List:1 x Base1 x Flywheel1 x Instruction Manual1 x Air Cylinder1 x Glass Cover2 x Collar1 x Hose1 x Small Wrench2 x Bracket25 x Accessories