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Van Hook Deadlocks Van hook deadlocks work independently of the vehicle's factory lock system. They feature a hook-style bolt that latches onto a receiving bracket. This makes it harder to get into. They are particularly useful in stopping "Peel and steal". They also prevent criminals from taking away your catalytic converter which transforms harmful pollutants into less harmful gases. Hook Locks Van hook deadlocks operate independently from the manufacturer lock and can be operated with keys, providing a s