Commercial Grade Construction and features ensure better performance and reliability. High Abuse Nylon, Smooth Surface creates clean upscale look. Manufacturered by Cooper/Eaton for Hubbell. Fast installation - strip the wire, insert and screw to clamp down with terminal. Designed for both #12 and #14 AWG solid wire. Terminate up to eight #12 wires for multiple down stream circuits. New patented tamper-resistant shutter design for an amazingly smooth and easy plug-in. TR feature meets latest code preventing objects from being inserted into the openings. Tough thermoplastic ultrasonically welded construction. Break off tabs for when the circuit needs to be split.