The electromagnetic coil demonstration set is an excellent tool for teaching the principles of electromagnetism. With its easy-to-use design, students can quickly set up experiments and observe the effects of electromagnetic induction. This teaching aid is ideal for middle and high school science classes, providing a practical and interactive way to learn about electrical physics. Features -Color:Multi -Material:Copper, plastic -Size: 8.50X6.50X4.00cm/3.34X2.55X1.57in -Note: Bottom holes are respectively 1 cm and 2.5 cm. - for experiments: essential for middle school physics experiments, particularly in the study of electromagnetism and electricity -Excellent copper: features primary and secondary coils made of copper, ensuring stable and effective electromagnetic induction -Userfriendly design: easy to operate, making it ideal for both student experiments and teacher demonstrations -Versatile usage: can be used to demonstrate various principles, including electromagnetic induction and faraday's law - and tested: designed for longevity, with rigorous testing to ensure it withstands frequent use in instructive settings Package list: 1 x set of induction solenoid