I am a tool maker, and the files I bought years ago have worn out, these are somewhat wider than the pillars files I had so I will have to get used to the difference, at first use they seem to be just as good as the ones I got from Switzerland so many years ago. I use them for strictly finish work so they are too sharp right now so I'll have to "wear them in" with some extended use, so far good product, I only wish they had come in a narrower width.