First off, I think that these erasers are very cute. However, for functionality,
these aren't that great. They don't fully erase and they don't erase all of the
lead. Since they can pull apart, when erasing they usually fall apart. I would
recommend these strictly as novelty items, but if you're looking for
functionality as well as novelty, I would recommend the
Kokuyo Kadokeshi 28-Corner Eraser (in medium or large).