Philmore WT619 is a large utility alligator clip that is designed for easy and secure connection, grounding, and assembly. It is made of durable black plastic, has 10-inch leads, and is designed with insulated jaws. Its heavy-duty clamps can be used for a variety of electrical applications such as making connections, securing circuits to an object, and grounding wiring. The WT619 has an extra-wide opening of .475 inch (12 mm), making it perfect for thicker wire gauges.