The Mueller's BU-21AEZ crocodile clip is an innovative, patent pending version of Mueller's popular BU‐21A clip. The handle extensions reduce the force needed to open the clip by over 75%, while still keeping the BU‐21 grip strength. The reduced force allows all day long use without fatigue. The material used is zinc-plated steel. The current rating is 50A. The BU‐21AEZ clip does not have an insulator available. It acts like 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.

• High strength
• Rust proof
• Durable
• Optimum finish
• Dimensionally stable

• Quick and cost-effective assembly or modification of experimental circuits
• Used with batteries, small light bulbs and other small electrical devices in schools 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