For years, I carried a 4” Diamon Deb nail file ( http://store.cache-beauty.com/deb4042.html ) in my wallet. It is covered with a fine diamond dust. The pointed end is no more such than any other nail file and, of course, it can be ground off. This can usually be found in local beauty supply shops.

In my briefcase, I do carry the larger 1” x 8” file ( http://store.cache-beauty.com/deb5025.html ). It is much coarser and is, I think, for foot callouses and toe nails. I use it to quickly take down a finger nail and for those cases where one might want a general wood or metal file. This may be harder to find locally.

Pete