I have found this hole punch to work exactly as promised. I am writing this more to share my purpose for use, as I love to learn ideas and uses (that I never thought of) for things I use through reviews. We travel quite a bit, and often with my parents, so there are many room keys floating around, and we're usually sharing one by the end of the week. Our old strategy was to write names on them with a sharpie, but that doesn't prevent them from being lost. Soooo - I now keep this with my travel stuff and punch a hole in each room key/card and attach a lanyard (the plain black ones don't cost much at all). The string alone tends to help not lose it, but when the family can put it around their neck or attach other stuff, they are rarely lost.