The Mystery of the Small Hole: What Is It For?

Have you ever noticed a small hole in everyday objects and wondered about its purpose? Whether it’s on a pen cap, a padlock, or even an appliance, these tiny holes often go unnoticed. However, they serve essential purposes that many people are still unaware of. Let’s uncover the mystery behind some of these small yet ingenious designs.

1. The Small Hole on a Pen Cap

One of the most common yet overlooked small holes is found on pen caps. Its purpose? Safety.

• The hole is designed to prevent suffocation if the cap is accidentally swallowed. It allows air to pass through, reducing the risk of choking.
• This safety feature has become a standard in pen manufacturing and has likely saved countless lives.

2. The Small Hole on Padlocks

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