Easy to use: Just need to snaps the cigarette lighter socket in the hole, there’s no threaded ‘ring’ that has to be screwed on from the connector side. If your wiring is long you can draw it through the hole for connection to the socket.12V power supply.Widely Used:The Cigarette socket power outlet fits for all 12V accessory plugs, apply to any DC, 12V motorcycles, boats, mowers, tractors, cars, etc. Work perfectly with any car powered devicesWhat You Get: It really worth the price and 4 pcs 12V 120W cigarette lighter socket you will get. this quantity is enought to install into your cars or boats,It will be protected when the current is to high, so safe to use.Material:The cigarette lighter power outlet made of corrosion resistant material to ensure solid contact and low voltage drop. It has watertight cap to keep away from the water and dustSIZE: this Cigarette Lighter Socket plug adapter size is 60mm x 25mm(2.36 in x 0.1in). You just need a hole which diameter is 26mm(1.02 in) that