ILCO Bump Halt™ Bump Resistant Cylinder Pins

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Bump resistance Kit includes 10 T-style driver pins and 10 heavy-duty springs which can make pin-tumbler locks incredibly resistant to both bumping attacks and also picking/manipulation/raking/etc with conventional tools.  An easy drop-in swap for a driver pin in any chamber of your lock (the deeper chambers are most traditionally used) which you can do yourself or have installed by a locksmith.