Features: Explore the fascinating world of magnetism with our DIY Magnetic Field Ball Small Production Material Package! Made from durable plastic/wood, this package allows children to assemble and observe the magnetic field in action. Designed for elementary school students science enthusiasts, it provides an engaging and educational diy experience. Perfect for use in the classroom or home, this package is great for teaching physics and promoting STEM . With easy-to-follow instructions and all the necessary materials included, this magnetic field observation puzzle will provide hours of fun and learning. Specifications: Material：Plastic/Wood Size：approx 8.5x8.5x9.5cm/3.35x3.35x3.74in Package Includes: 1PC Small Magnetic Field Ball DIY Package note: Please allow 1-2cm errors due to manual measurement,please make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.