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L4V Hook Deadlocks L4V hook deadlocks are an upgrade for the rear and side van doors, as well tailgates and doors for cabs. They function independently of the manufacturer's locking system and are secured with high-security keys. Designed specifically to combat attacks of 'peel and steal' this product has been tested independently increasing resistance by up to 300%. It is ideal for couriers with multiple drops or in situations where the driver may overlook locking the door of the vehicle. Hook Deadlock A hook deadlock can be installed on a vehicle'