The CordSafe PLUS extension cord connection protective safety cover is a weather resistant housing that retains and protects your plug connections outdoors or indoors. If you are using multiple extension cords or connecting other cords together, the connections points should be protected to avoid being pulled apart or getting water in them. Never tie 2 extension cords together. The CordSafe cord connectors are a perfect solution to creating a safe, long-lasting connection. The CordSafe connectors take several different sizes of plugs and cords up to 12 AWG. They are ideal for those Patio Bistro Strings Lights, Holiday Lights, Christmas Lights, portable fans, tools, audio visual installations, RV and camping uses. The CordSafe cord connectors are made of a durable, weather resistant propylene plastic with gasket entry points . . . and they are proudly Made in the USA.