The only nail file you will ever need! I've had a #2 Diamancel for over 10 years, and it still works amazingly well. I have never used another file since owning this one. So even though it's a bit costly for a nail file, it is worth the money because it lasts so long. I like the #2 because it works well for both shaping and fine filing - there is no need to have a #1 or #3 as well. I am getting a second one because I am now splitting my time between two houses, so I don't have to
keep carrying it back and forth. I also highly recommend the Diamancel foot/hand buffers.