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L4V Hook Deadlocks L4V hook deadlocks are an upgrade for side and rear van doors as well as tailgates and doors for cabs. They are not tied to the locking system of the manufacturer and secured with a high security key. This product, created to ward off 'peel-and-steal' attack It has been tested by an independent lab and has the potential to increase resistance by up to 300 percent. It is perfect for multi-drop couriers or applications where the driver is prone to not lock the vehi