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YouTubeDr Lock
Master Keying Explained! How I Made 2 Keys Work a Lock 🔑
In this video I show how to master key a lock so that two different keys can open the same lock while all other keys will not work. I go through the steps of using key codes and master pins inside the lock cylinder to set up this system. You will see how a master key system is created and how the pins are placed to make sure only the keys you ...
3K viewsJul 8, 2025
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