Made of high-quality silicone materialThe test lead is made of high-quality silicone material. Silicone helps to extend the life and is easy to use. The silicone lead is soft and resistant to high and low temperatures. The banana plugs are stackable. The banana plugs are stackable. You can plug multiple banana plugs into the same banana socket. Therefore, you can quickly use a different discharge type without having to insert or re-insert the dissipation. Insulated with pure copper and conducts smoothly: the other end of the test wire is a jumper used for breadboard projects. It is insulated with pure copper and conducts smoothly. Help distinguish them well when testing: very suitable for electrical and electronic testing. The 5 colours can help you distinguish them well. Suitable for: It is suitable for connecting the wires from power supply, LED light bar, multimeter and Lilypad to the breadboard.