The Qwik-Lok guarantees that extension cords and tools are LOCKED together. It is the toughest, strongest, most reliable 120V - 15A connector on the market. Features: An outstanding end that eliminates tied, frayed, burned out, or ruined cords and connectors. Works with common 2 or 3 pronged plugs. Eliminates need for twist-lock devices. Delivers consistent, reliable power at all times for demanding industries and trades.