Supply 3-Prong to 2-Prong Grounding Adapter Wall Outlet Plugs, 4 Piece 3 Prong To 2 Prong Converters for Outlets, Electrical, Household, Workshops, Industrial, Machinery, Appliances and many more. 125V 15A, 1875W Max, ETL Listed, White. The Polarized Grounding Adapter allows grounded two-slot outlets to accept three-prong plugs. Use the included mounting plate to attach to the wall plate which adds extra protection.