Description This single-pole switch is made of durable lightweight plastic and stainless steel, easy to use, simple to operate, and designed for beginners. Great for lower graders and kids to explore early and get interested in physical science. Features -Color:Sky-blue -Material:Plastic, stainless steel -Size:7.50X4.00X2.50cm/2.95X1.57X0.98in -Single-pole single-throw switch for making and breaking a single electrical connection circuit. -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. -A demonstration prop for teaching the principles of physical circuits, but it is not suitable for use in daily life. Package list: 4 x Single Throw Switches