Features: The horseshoe-shape electromagnetics demonstrator features advanced magnetic attraction, easily adhering to metal object and showcasing electromagnetics principles, great for physics experiment classroom teaching demonstration. Equipped with adjustable current control device, this electromagnetics experiment demonstration tool allows users to modify the magnetic intensity as needed, ensuring safety in school labs and home education environments. Constructed from high-strength metal, this sturdy demonstrator resists wear over time, offering prolonged use compared to plastic models, great for frequent use in educational institutions. With its light weight and portable size, this electromagnetics demonstrator is easy to carry and use immediately without complex preparation, suitable for teachers moving between classrooms and for home education. This multifunctional electromagnetic demonstrator is not just for classroom teaching aid but also for science exhibitions and technology gatherings, stimulating interest in science among children and educators. Specifications: Component: Magnetic, Metal Color: Blue Redness Silver Size: Approx. 5.7x10cm/2.24x3.94in Weight: Approx. 287g Package Includes: 1Piece Horseshoe Electromagnet note: 1.Please allow 0-1cm error due to manual measurement. Be sure you donot mind before bid. 2.Due to difference between different monitors, the picture may not reflect the actual color