Laclede’s thru hardened security chain with Titan cylindrical lock is one of the most effective security chains available on the market. Miami Cordage offers custom length assemblies with the chain covered with cordura to protect it. The thru hardened security chain has a square link design which provides much higher resistance to cutting than the traditional round bar stock used to make most chains. The square cross section of each link does not allow the intersection of a lever or other burglary instruments. The Titan cylindrical lock included & every key is provided with an identification code to allow its duplication.