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Van Hook Deadlocks A van hook deadlock is a separate lock that can be affixed to your vehicle. They aren't easy to operate, making them a good deterrent for criminals. They require a key to operate. These locks are perfect for those who live in areas with high crime rates but do not have access to parking off-street. The locks can be put in place by a specialist in a matter of hours. They are more secure than slam locks It can be a challenge to select the right security product