Feature:Multifunvtional product, perfect for travel use.Wiring kit for cigarette lighters to install in any 3.1A motorbike,Boat, Riding mower, tractor or car.Widely used with electric equipment for power supply: Vehicle,GPS, mobile phone, camera, mp3 (cansmoke)The Voltage RegulatorAutomatically adjust the output voltage.Insure the steady operation of the product.Protect the product from the threat of overtension.Decrease the accidents and save your life.Specification:Overall Size: about 6 x 10 x 8.7cmBarrel inner diameter:2.1cm/0.83Barrel inner length: 3.6cm/1.42Package Included:1 X Car Vehicle Cigarette Lighter4 X Screws