High Quality LeadsThe test cable is made of pure copper and silicone, thick and fexible, which has better conductivity and stability. 100cm length can meet daily test requirement. Voltage/Current: 1000V 15A. Copper 4mm Banana PlugNickel-plated pure copper banana plug ensures great conductivity and transmission, low loss and corrosion resistant. Plug and play for test quickly assemble circuits. Stackable DesignThe stackable banana plugs have a 4mm jack that can be inserted through another banana plug. It"s convenient and easy to share the circuit if you want to connect to a different test lead. Anti-slip HandleThere are 3 anti-slip bars on the front and back of the banana plug handles, which allows you to hold it firmly and not easy to slip out of your hand when inserting and removing the banana plugs. Wide ApplicationPerfect for any Multimeters, Clamp Meters or other devices with 4mm sockets, you can connect test probes or alligator clips for electrical testing, such as Appliance Repair and Laboratory/Industrial electronic testing. 5 colors can help you distanguish different curcuits.