Its main purpose is convenience. The hole makes it easy to attach nail clippers to a keychain, lanyard, or ring, which helps keep them from getting lost and makes them easier to carry or find when needed.
It can also be useful in other ways. Some people hang clippers on hooks for quick access, while others use the hole for a steadier grip when trimming. It can also help keep multiple clippers together in one place.
This small feature shows how thoughtful design can make even a simple tool more practical. The round hole has remained part of nail clipper design for many years because it adds real value without changing the tool’s basic shape.
