Works with any standard cigarette lighter plug and suitable for any 12V - 24V vehicles (motorcycle, boat, truck, ATV, RV) in need of extra and heavy duty cigarette lighter plug sockets. Works with any standard cigarette lighter plug and suitable for any 12V - 24V vehicles (motorcycle, boat, truck, ATV, RV) in need of extra and heavy duty cigarette lighter plug sockets. Easy to install, Each socket has a retaining nut against a panel. "+" is plugged into positive pole and "-" is put on negative pole. Made Of Plastic, Which is With Resistance To High Current, High Temperature And Wear Resistant.Work perfectly with Car Powered Devices, Higher Load Capacity can use the connectors inside. Widely to supply power for vehicle, GPS, mobile phone, camera, mp3, Suitable for any DC 12V/24V Marine Boat motorcycle, boat, riding mower, tractor, car, etc