The small hole is another example of how seemingly insignificant details can have a practical purpose.
One Common Purpose: Hanging or Attaching the Clipper
On many nail clippers, the round hole is associated with storage.
A small hole can allow the clipper to be attached to a key ring, chain, hook, or other holder.
This can be particularly useful when nail clippers are kept as part of a travel kit or personal grooming set.
Instead of allowing the clipper to disappear at the bottom of a drawer, bag, or toiletry case, the opening can make it easier to attach the tool to something.
That may sound like a small feature, but anyone who has searched through a crowded bathroom drawer for a tiny nail clipper understands the value of convenient storage.
Some manufacturers also use holes or openings as part of the design of compact grooming kits.
In those situations, the opening can help keep several tools together.
But Is That the Only Purpose?