StewMac Micro-Mesh Touch Up Filing Stick, Multi Purpose, 3 Grits | Glossy Finishes, Metal, Wood, Acrylic, Plexiglass; 2400/4000/12000 Grit; Padded Core Conforms to Surface; Fret Touch Up Stick

It has worked well so far. I think it will hold up pretty well too.

Works great with no complaints but you are better off to buy these elsewhere for much cheaper.

Great, but wearing out quickly.

Wow. After leveling my frets with an inexpensive sanding beam, I used numerous grits of sandpaper (up to 2000) to crown them. (I don't have a crowning file). The frets still had plenty of scratches from the leveling at their apex which I did not sand (so the apex was hit with only 400 grit, I think). Then I took this thing and went over each fret with all three grits for only a few seconds each. Holy crow, what a job it did. The crowns are perfectly smooth and shine like mirrors. What a difference. I can see using this lightly any time I change strings if the frets have even a hint of dirt, wear or scratches. Inexpensive and exceeded my expectations.

Great product, highly recommend.

Just right for final finish

These StewMac files are superb. While costly, they get the job done.

This tool worked perfectly, I wouldn’t hesitate to buy another.