Maxparts BEF.01s Fret End File R1mm

This is fret file for narrow frets. The concave side is designed specifically for narrow frets but the flat surfaces have more general application. This is a high quality tool that you will love. It has safe edges so that you don't have to tape of your fingerboard if you just want to quickly fix one or two poking fret ends. I am also buying the other two sizes.
This file is worth the price.

This is a solid tool with a quality feel. I used it (along with the other two sizes) to dress the frets on my old and worn strat. It worked well, was easy to use, and got the job done to my satisfaction.