Description of Eagle Creek Undergrounded Adapter Plug (D) All over the world there are different configurations of wall outlets. Adapter plugs allow you to plug your North American appliances into wall outlets internationally. Please reference the country guide. Features: Ungrounded adapter plug for 2 pinned appliances such as hari dryers, phone chargers etc..., and voltage converters. For use in Great Britain, Ireland, Africa, Hong Kong, and Singapore.