Feature: 1. Sturdy And Durable: This wind formation demonstration box is made of excellent quality glass, ABS and iron materials, which is sturdy and wear resistant, not easy to be damaged, and has a long service life. 2. Multifunctional: This physics teaching tool is versatile and can be used to demonstrate the principles of wind formation as well as to develop students' hands on skills. 3. Convenient And Practical: This science and education toy has a transparent design, which can be very intuitive and simple to show the formation of wind, which helps to teach. 4. Wide Application: This wind forming teaching toy has a wide range of applications and can be used in schools, laboratories and teaching displays. 5. Compact And Portable: This experiment materials teaching instrument is small in size and light in weight, which is very convenient to carry and use, and easy to operate. Specification: Item Type: Wind Formation Demonstration Box Material: Glass, ABS, Iron. Package List: 1 x Wind Formation Demonstration Box1 x Accessory1 x Candle1 x Bug Incense Note: 1. The candle should not be too long, 30‑40 millimeters is appropriate.2. The candle can not be burned continuously for too long, so as not to affect the experimental results, the second time to use, to make the air inside the combustion chamber completely cooled.3. The inlet fan has a large starting resistance, if it is difficult to start, use your hand to gently flick the fan blades.