Features: Magnetic field simulation tool for advanced physics experiment, featuring accurately magnetization and demagnetization control for professional Electromagnetism studies. Quick assembly and component replacement without additional tool, optimizing work efficiency in dynamic lab environment. Suitable for physics teacher, educators, and students requiring hands onelectromagnetics experimentation demonstration tool for academic or professional project. Essential for university laboratories and research facilities conducting electromagnetic demonstrations, curriculum based experiment, or prototype testing. Crafted with plastic metal, this physics electromagnetism toolkit ensures stability during repeated magnetization cycles while maintaining experimental accuracy. Specifications: Component: Plastic, Metal Color: Clear, Silver and Redness Size: Approx. 15x10.5x2cm/5.91x4.13x0.79in Weight: Approx. 300grams Package Includes: 1Piece Physical Electromagnetics Experiment Equipment 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