These high-quality, ergonomically designed, 1-piece adapters have a built-in LED power indicator, are Marine UL listed and are used much like Pigtail Adapters - however, they do not have sealing collars. Use only in an enclosed, dry location, such as powering your boat from a 15 Amp power receptacle inside your house. Female connector (boat side) attaches to boat inlet or cordset. Male plug (dockside) attaches to the dockside receptacle or cordset. 5-year warranty. Not recommended for use in wet locations.