This is a brand new L5-30P locking male plug. L5-30P is a NEMA configuration code that sets standards for the electrical industry insuring interchangeability with other devices of the same designation. The L5-30P is a 3 prong male plug that is rated for 30 amps 120 volts. These are Eagle / Cooper brand, but will interchange with many other part numbers by manufacturers such as Leviton, Pass and Seymore, Bryant, Hubbel, Marinco, and many others. These are made of Heavy Duty Nylon material and have a captive cord clamp for great connections to your cord. These are commonly the plug you need to fit many generators such as Generac, Coleman, Briggs and Stratton and others. I ship each weekday and get your oders out fast via 1st class mail. (larger order will probably go Priority Mail)