The small round hole on many nail clippers is often there for a few practical reasons:
- Key ring or storage loop: The hole lets you attach the nail clipper to a keychain, hook, or lanyard so it’s easier to carry and less likely to get lost.
- Manufacturing and assembly: On some designs, the hole is part of how the clipper’s metal pieces are aligned, stamped, or assembled.
- Design balance: It can help reduce weight slightly and is part of the traditional design of many clippers.
Some people claim the hole is meant for sharpening the clipper or crushing objects, but those uses are generally not the original purpose and can damage the tool or be unsafe.
The design has lasted because it’s simple, cheap to manufacture, and still useful for keeping a small grooming tool attached to other items.
