Why Do Pen Caps Have a Tiny Hole at the Top?

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### 3. **Additional Benefits**

While the safety reason is the most important, the hole also:

* Helps balance air pressure inside the pen cap, reducing the risk of ink leakage or ink drying out too quickly.
* Sometimes aids in the manufacturing process by allowing air to escape when the cap is pressed onto the pen barrel.

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### 4. **Other Everyday Items with Similar Safety Features**

This hole concept is common in many small plastic objects that can be swallowed, such as:

* Toy parts
* Small bottle caps
* Certain types of earplugs

It’s all about **minimizing choking risks** while keeping items functional and safe.

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## Final Thoughts

That tiny hole on the top of your pen cap isn’t just a random design quirk — it’s a **thoughtful safety feature** created to protect users, especially kids, from choking hazards. So next time you pick up a pen, remember that even the smallest details often have big purposes!

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**Curious about other everyday objects and their hidden features? Just ask — I love uncovering the little secrets all around us!** 🖊️✨

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