The King Innovation Contractors' Choice Tan Winged Wire Connectors are perfect for indoor, dry applications in both residential and commercial installations. Designed for conventional copper/copper dry splices, these wire connectors are constructed with a tough thermoplastic/polycarbonate flame retardant shell to help reduce the risk of electrical fire or appliance failure. Wire connectors are easy-to-use, as they require no pre-twisting. Although these specific wire connectors are tan, there are a variety of colors available for industry color-coding.