While this file is nicely made, feels sturdy, and the machining seems to be quite good, it only gets you so far. Perhaps if you haven't tried pricier, higher grade tools or generally don't have a point of reference to what a quality file feels like when it's shaving off metal, this will seem good enough, but it really isn't. First off, it leaves way too many scuff marks on the frets which prolongs the job by quite a lot, having to undo what the file does. Secondly, it just isn't sharp enough, you need to add quite a lot of weight behind it for it to even begin to shave off the frets. After doing an entire neck with this, it's just not sustainable for long-term work. And another thing - the handle doesn't hold the file, not on my copy at least. Mine slipped out midway through the first neck, had to glue it in as it was just not a tight fit. Now, I understand that at this price point, this is in a league of it's own, and that you can't expect it to behave as tools that cost thrice as much. I do have other tools that I use (Hosco mainly), bought this just to try, on a whim. The difference between something like the Hosco fret file and this is not even comparable, it's like cutting butter versus shaving wood with a butter knife. If you do frets once in a blue moon, sure, it'll do the job. But if you're working with guitars all the time, skip past and get something more substantial, as this will be a chore to work with.
