Recommended holy grail foot file for exfoliation

This is a Microplane foot file. They are originally a company that makes graters, potato peelers, cheese cutters, and things like that, but it turns out they make foot files too, haha. I think you probably have to buy it through international shipping in Korea, but a friend living in the US bought one for me a few years ago, and I've been using it ever since. Out of all the foot files I've used so far, this one doesn't hurt at all, exfoliates really well, and is just amazing! I highly recommend it 👍 Once you try it, you won't be able to use any other foot file, haha.