【Clear Electromagnetic Demonstration】Precision coil and magnet system drives iron ball for steady circular motion. Visualize electromagnetic acceleration, great for physics teaching and STEM learning. 【Sturdy Build】Reinforced bracket and precise guide rails keep stable operation. Durable structure fits long-time classroom demos and lab experiments. 【Easy Adjustable Motion Control】Single-ball design avoids signal interference. Freely adjust speed and direction to observe magnetic field interactions clearly. 【Safe Wide Voltage Design】Designed for flexibility and safety, the system accepts 12–24V DC input (rated current ≥1A), ensures safe use for experiments and DIY projects. 【Multi-scene Application】Ideal teaching tool for schools and labs. Also suitable for electromagnetic research, robotics development and science hobby use.