Master Lock Lock Box, Resettable Combination Dials 5400DHC
Master Lock Lock Box, Resettable Combination Dials 5400DHC
Oct 28, 2021
HOMEDEPOT
We put the classic Master Lock 5400 series combo box under the microscope and decoded it step-by-step. No force, no destruction—just technique. This video breaks down how the internal wheels behave, what to feel for, and how a simple decoding method can bypass most common combination lock boxes. If you’re learning lockpicking, physical security, or just want to understand how these mechanisms really work, this one’s for you. ⚠️ For educational and security testing only. Always practice on locks
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