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Is a Van Hook Lock Worth the Investment? A van hook lock is a great way to improve the security of your van. It is attached to the door or connecting panel, they operate independently of the manufacturer's locking mechanism and can only be operated by keys under the full control of the driver. In contrast to straight bolt deadlocks, These locks are secured with a hook bolt which catches into a receiver keep, offering the highest level of security for your vehicle. High-Security Locks Security