These multi-range Hex-head connectors cover 95 percent of everyday applications making them the simple choice for all of your wire connection needs. Don't worry about using a Hex tool to install - you can't over-torque this connector because it's patented Hex-head design strips out at UL torque saving the wires and your fingers. Inside the connector a zinc-plated square wire spring ensures a secure connection that resists corrosion. The thermoplastic shell is designed for long-lasting strength and resists chemicals while the deep skirt supports smooth wire entry and coverage of stripped wires. Use for large appliances, timers, indoor lighting, switches, ballasts, junction box, air conditioners. Hex head design allows automatic or manual installation without stress whitening or distortion #14 to #6 AWGUse 7/16" socketMulti-range copper to copper connector covers 95% of everyday applicationsStreamlined design for compact installationsSquare wire spring grabs and holds wires for secure connectionsLong skirt covers stripped wiresRated at 600 volt maximum and at 1000 volt maximum lighting fixtures/luminaries and signsCopper to copper connections onlyGray