Quality Materials: The lamp cord set's shell, plug, and switch are made of PVC plastic, providing excellent insulation to protect against electric leakage and shock hazards. The internal wires are crafted from tin-plated pure copper, ensuring safer and more stable operation for your electrical appliances and lamps. Safety & Installation: Asjeumt lamp cords, switches and plugs all comply with North American electrical safety standards and certifications. Pre-stripped wire ends (0.25 inches/6mm) and clear neutral/live wire labels make setup a breeze. Included spring quick wire connectors eliminate the need for soldering perfect for DIY beginners and pros alike.