12V Charger Plug Motorbike Motorcycle Car Cigarette Lighter Socket Power Outlet Plug And Voltmeter Socket the panel is 4.15 inches wide by 1.67 inches high and a beefy 0.21 inches thick. Each plug comes with a splash proof plug to seal the socket preventing water or sand from entering the empty jack. There are star nuts behind each socket that lock the jack down tightly into either the panel or directly into a waiting 1.13 inch hole. Input: DC12V-24V.send connecting short wires for free Barrel inner diameter:2.1cm/0.83",Barrel inner length:3.6cm/1.42"