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L4V Hook Lock L4V's statement lock is a van-mounted surface lock that secures side-load doors against the threat to 'peel steal'. It is installed externally to brace the door in place, and also acts as visual deterrent. It is independent of the manufacturers locking system and is operated by a high security key. Kits are designed to fit specific vehicle doors and come with UV-stabilised black exterior trims made of nylon. Hook Locks Van hook locks function independently of the manufacturer's locking system on your si