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High-Security Tyson HaspLock. Cast in alloy steel and case hardened, the HaspLock is designed to give a high resistance to boltcutters, jemmy bars, hammers, drills, and hacksaws. With a breaking force of 4,400lbs (2,000kg) the HaspLock is designed to replace this conventional hasp and staple and padlock arrangement and to provide far greater physical security than this traditional system.