This is a brand new Voltec Pro 15A-to-30A (M/F) E-Zee Grip 12" Dogbone Adapter, model number 16-00502. This adapter uses 10 gauge electrical wire to go from a standard 15 Amp grounding plug (male end) to a 30Amp receptacle (female end), and the 30A plug comes with a durable E-Zee Grip handle.