Keys to Understanding Tubular Locks: A Self-Teaching Manual Covering 3 Basic Tubular Locks

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For the first time, a manual on the 3 most popular tubular locks that are used on most vending machines, coin operated washer, coin changers and burglar alarms. Internal construction is fully covered as well as how to open the locks by drilling and by impressioning.

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http://rapidshare.com/files/119541646/KTL.rar