With a full line for virtually every wire size and combination, the WingTwist® Wire Connector offers a great combination of performance and value.The contoured wing design of the WingTwist® provides maximum torque for a variety of electrical applications while the copolymer shell and live-action spring expand for smooth, progressive tightening providing dependable connections.With a tough, flame-retardant shell that withstands environmental extremes, and a long, deep skirt to provide maximum dielectric protection to prevent flash-over and turned-back strands, the WingTwist® Wire Connector brings comfort and performance at a price that is right.The Combination WireTwist®/WingTwist® Kit offers one easy solution for all your twist-on wiring needs. This 620-piece kit features an assortment of all models and sizes of WireTwist® and WingTwist® Wire Connectors in a handy plastic storage case. Perfect for maintenance and small project applications where several different wire connectors are required.