The TC644 is a cigarette lighter plug that provides a convenient source of 12 volts DC when inserted into a vehicle's lighter receptacle. It features a plated, spring-loaded center contact and dual side contacts, a design which assures minimum voltage drop for connected devices. Made of high-impact plastic, the plug body unscrews to allow for easy fastening of wires. This makes it ideal for users who need to assemble their own custom power cords for various 12V automotive applications.