Blue winged wire connectors are designed to make electrical connections and it covers a wide range of wire combinations with one connector. The contoured wing design 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, they bring comfort and performance at a price that is right. Use to connect and insulate 2 or more copper wires together inside an approved electrical box Contoured wing design provides comfort for fingers and enables maximum torque during application Expanding, square-wire spring creates secure connections For copper to copper connections only; do not use on aluminum wire Tough, UL 94V-2 flame-retardant shell rated for 105 C or 221 F Wide, deep skirt opening accommodates a variety of wire combinations Rated for 600-Volt, 1,000-Volt in lighting fixtures and signs Color/Finish Family: Blue Manufacturer Color/Finish: Blue Series Name: WingTwist Maximum Wire Capacity: Two # 6 AWG wires Minimum Wire Capacity: Three #12 AWG wires Wire Capacity: Min 3 # 12 to Max 2 # 6 AWG Application: Indoor Material: Plastic and metal Number of Ports: 1 Package Quantity: 10 Shrink Tubing Included: No Underground: No Warranty: 1-year limited Weatherproof: No Wire Connector Type: Wire connectors CA Residents: Prop 65 Warning(s): Yes Safety Listing: UL safety listing UNSPSC: 39121400