Mueller Crocodile ClipThe Mueller's crocodile clip fully insulated with a PVC sheath. It is compatible with all shrouded, unshrouded and retractable 4mm banana plugs. The material used is -nickel-plated steel, spring-music wire, rivet -steel and insulator - PVC. The current rating is 10A. It acts as a connector. The large versions of these clips, called automotive clips or battery clamps, are made of solid copper. For low electrical resistance, it is used with thick insulated copper cables to make connections between automobile batteries.Features and Benefits• High strength• Rust proof• Durable• Optimum finish• Dimensionally stableApplications• Quick and cost-effective assembly or modification of experimental circuits• Used with batteries, small light bulbs and other small electrical devices to teach students about electricity• Used as miniature clamps to hold parts together for gluing or soldering• Useful as a heat sink while soldering heat-sensitive devices