Made of plastic and copper material, this single pole is durable, sturdy, portable and practical. Great for making and breaking individual electrical connection circuits. Screw-type terminals for quick removal and installation of cables. Features - Color: As shown. - Material: Plastic and copper. - Size: About 7.50X3.50X2.60cm/2.95X1.38X1.02in. - These lightweight physics labs equipment are perfect for school physics demonstrations and projects. - Suitable for children to practice at home and DIY fruit batteries, it is beneficial to maintain children's creativity and improve intelligence. - Screw terminals, if you are using clips you may need to temporarily remove the connector knobs. - Improve analytical and operational capabilities. They can practice hands-on skills. - Provide accessories for physical circuit experiments, which will not leak and conduct electricity. Package list: 5 x