Managed to fix al my guitar nuts (haha).
But seriously, after buying these files, I found that I have waited way to long to get a good set like this.
Indeed, they are not super cheap, but it works so much better than trying to make your own files or using strings to cut out the best guitar nut.
If anything, they are a bit wide. The cut will be a v shape, so make sure that your nut is not to high.
Extra almost related tip, use a nail polish file to file the full nut and get a great shine!