This product is a single-pole , mainly made of durable lightweight plastic and copper, easy to play, simple to operate, and designed for beginners. Great for lower and kids to explore early and get interested in physical science. Features - Color: As shown. - Material: Plastic and copper. - Size: About 7.50X3.50X2.60cm/2.95X1.38X1.02in. - This is great for homeschool DIY circuits and physics class disconnect electrical circuit experiments. - Suitable for teaching the basic principles of electricity and the working principle of simple circuits to improve children's physical performance. - Easy to use and great learning tool for kids, intuitive teaching is sure to good any student. - It is a demonstration prop for teaching the principles of physical circuits, but it is not suitable for use in daily life. - The provides stable operation and visualization of the electrical principle, protecting the safety of the user. Package list: 5 x Equipment