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.