Created in Canada by a beauty industry pro, Diamancel files are the toughest buffers in the business, and we would know: they're the same ones used by the pros in our spas. Because they're made from the hardest, most abrasive stone known to man, they can conquer even the coarsest calluses. (Trust us, we tested them on a friend who won't even look at heels under 3" high.) They're flexible, washable, unbelievably durable and have 'nailed' rave reviews worldwide. Bottom line? 'File' these babies under: mani/pedi must-haves.