This Leviton Duplex Receptacle is a simple to install item that gives you two wiring options. You can use the standard sideterminals or use Leviton"s Quickwire feature on the back. With Quickwire you simply push your wire in and it is automatically grasped by a spring mechanism assuring a good connection. With the SelfGrounding feature you don"t need to worry about running a wire to an outside ground because the attached grounding clip will do it for you.