Have you ever noticed the little hole on your nail clippers? It’s not there by accident; it has a very specific purpose that almost no one knows about. Let me explain what it’s for.

Pin locking mechanism (on some models)
On some types of pliers, this hole provides stability. When the handle is rotated into the working position, the hole is caught by a small protrusion or pin, preventing the handle from swinging sideways during cutting.

Do you have any of these reasons in mind, or do you know of another clever application that I missed? I look forward to hearing your ideas!