The experiment tool kit made of good materials is an excellent teaching tool. It can help children have more fun and fully understand the knowledge of physical optics. The practical kit is designed to help you provide more relaxed and interesting teaching methods that can better attract children's attention and help children gain better knowledge. Features -Color:Green -Material:ABS -Packing Size: About 53x14x11cm/20.87x5.51x4.33in - The product set made of good materials, it is safe to use and durable. - This is a practical teaching tool that can be used in physical optics experiments well. - Creative and interesting, with complete configuration, it can help children learn knowledge while having fun. -Enhance students' practical ability and thinking ability - It is not only a fun children's toy but also a practical teaching tool kit with a wide range of uses. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Dadangjia