Yard Master 87362G Multi Outlet Plug Adapter Indoor and Outdoor, Green 125V-15A rated 3-prong grounded outlet adaptor 5 outlet adapter converts a single outlet into 5 grounded outlets Suitable for outdoor/indoor use, works great for DIY projects and construction sites Features 2 cord locks, keeping cords secure and in place Adapter outlets may be used with large transformers or standard sized plugs