Tamper-Resistant Design: The socket is equipped with internal shutters that prevent the insertion of single-pronged objects, such as keys or paperclips, into the electrical slots. These shutters only open when both prongs of a plug are inserted simultaneously, ensuring safety.6.6 Ft Extension Cord. DURABILITY: The socket is constructed with durable materials such as heat-resistant plastics or metals to withstand frequent use and maintain electrical safety standards.