You’ve NEVER Guessed What That Tiny Hole on a Padlock Is For
At first glance, a padlock looks like a simple, solid piece of metal designed to keep your belongings safe. But if you look closely, you’ll notice a tiny hole on the bottom or side of many padlocks. Most people assume it’s just part of the design—or maybe even a manufacturing flaw.
Surprisingly, that small hole actually serves very important purposes.
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