https://squareblogs.net/rubber....peen1/why-you-should
Van Hook Deadlocks Van hook deadlocks are mechanical locks that work independently of the factory locking system. They have a hook-style bolt that locks into an receiving bracket, making it difficult to gain entry into your vehicle. They are particularly useful in preventing "Peel and Steal" crimes. They also stop criminals from removing your catalytic convertor, which transforms harmful pollutants into safer gases. Hook Locks Van hook deadlocks are operated by a key, and function ind