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Van Security Hook Locks Van security hook locks offer an effective barrier against burglaries. Also called hasp locks they come with hook mechanisms that latch into a receiver plate, which makes it incredibly resistant to force and prying attempts. They can only be operated by an extremely secure key that is independent of the lock system that is provided by the manufacturer. are the best solution for those who want an additional level of security from burglaries that can peel back doors. ULTI Lock Hook