Hot Air Stirling Engine Motor Model kit Aluminum Alloy Squirrel-shaped Electricity Generator with Colorful LED Light Educational Toy Lab Science Experiment Teaching Aids Gift for Teacher Student Children Adult Silver Features: The hardware part of the whole product is made of high quality aluminum alloy materials, CNC finishing. Surface high mirror light treatment, as shiny as a mirror, exquisite and beautiful appearance. The LED light will glow when machine and electric generator are working. With 4 anti-skid pads at the bottom of model machine, ensure stable operation. It can be used as a special squirrel shaped artwork to decorate at home and in the office. Great educational toy, classroom or laboratory experimental teaching aids, a best choice gift to students, teachers, children, friends and colleagues. Specifications: Color: Silver Material: Aluminum Alloy + Glass Item Size: 15.5 * 8.0 * 12.8cm / 6.1 * 3.1 * 5.0in Item Weight: 520g / 18.3oz Package Size: 17.5 * 13.7 * 9.5cm / 6.9 * 5.4 * 3.7in Package Weight: 651g / 23.0oz Package List: 1 * Stirling Engine Model 1 * Alcohol Lamp(without liquid) 1 * Glass Tube 1 * LED Light 1 * User ManualEnglish)