NO LONGER LOOSE CONNECTION: The conventional cigarette style plug inserted into a cigarette socket for the car refrigerator charging cable usually provides a loose connection, which causing the plug falling out, your fridge shutting down during the vibration of rough roads. You maybe cannot realizing it until your food is spoiled or even the virtual connections cause the cigarette plug to burn and melt. This upgraded connection setup also has the cigarette style plug, but is screws off to reveal a pronged plug that mounts into the ARB outlet. This pronged connection also has a locking collar to prevent the plug from falling off. All in all, get this cord and the AR-b receptacle, loose fridge connections will be a thing of the past.MORE RELIABLE CONNECTION: Perfect for RVs, campers, truck cabs, cars, SUVs，Keep your refrigerator powered for a long time without falling off，No matter how rough the road may be not easy to loosen, keeping the car refrigerator in working condition. For the more adventurous 4WD owner who wants to minimize the voltage drop in the electrical connection. This means you can install an extra 12V outlet at the rear of the car, SUV or pick up, near 12V accessories, shorten the DC lead, and have a secure plug when traversing corrugated roads, the cigarette plug tip can be removed and the special two pin plug can be screwed into the matching AR-b power socket for a secure connection.TWO METHODS OF USAGE: a) Twist off the cigarette lighter plug to expose the 2-pin plug, connect it to the matching KarlKers socket, tighten the locking collar to ensure a secure connection and prevent it from falling off; b) The conventional connection method, inserting the cigarette type plug into the cigarette lighter plug socket.DURABLE AND STURDY: The cigarette lighter cable adopts 16AWG 10ft (3m) heavy-duty cable, has a larger contact area, which can reduce contact resistance. The cigarette lighter is equipped with an easily replaceable 10A fuse, fully meeting the usage range of 12V-24V car appliances, making you safer and more confident when using. This threaded socket and surface mount works well with the 2-pin plug of the cigarette lighter for fridge freezer DC cord. The outer shell is made of sturdy plastic material that is resistant to UV rays, and is equipped with an O-ring seal to reduce the chance of water ingress. It also includes a path for internal breathing and condensation reduction. Fixing of the surface mount housing is completed via 2 molded mounting screw holes.PREVENT SHORTING:When designing the DC fridge cord & plug end, Our engineers included protection against reverse polarity and shorting/arcing of the terminals. The DC Power plug has a locating pin, which orientates the terminal polarity. To prevent shorting, the electrical connectors only come into contact once the orientation is correct and the pin is inserted into the recess. 24/7 free technical support service,100% customer satisfaction. 1 Years long time warranty. Any issues about the quliaty questions, we will take the issue for you via Replacement or Refund.