Cumple su función perfectamente y evita romper la célula al hacerlo con herramientas no específicas.

After deciding to replace the nut of my new guitar to a Tusq one, I had to file the (preslotted) slots to proper depth as they were significantly too high otherwise. I first got a 10€ set of supposed nut files for this, which were not more than little metal rods with some knurling on it, it didnt get through the tusq very well and as far as it did, it wasnt going to get very pretty as the rods had very little and rapidly decreasing texture. So I stopped and since I enjoy maintaining and modding guitars, I decided to get a set of good quality files. This set seemed like a good match to most string gauges I use. Benefit of the set is it gets you a really nice aluminum case with padded inside to store them in. You get less options than with separates but if you find a suitable set it's a nice extra.The files themselves are very good from my limited reference. The handles are easy to hold and for harder to access places you can remove the blade with a minimal sized handle (i didnt find this needed so far). After using these to finish my nut slots and file them down to about 0.4mm on fret one, I was able to get the action lower than I could before and as a result the guitar now places a lot nicer.They are not cheap and for filing one nut its not worth it, just let a pro do it, but if you work on guitars regularly, these make really nice shaped and clean slots. I have not tried other nutfiles of good quality so how they compare I cant call, but the result is great and I think the blades will last many nuts.It is important to brush the filed material from the file edge, after and sometimes in between filing as well. A little brush would have been a good addition to the storage case, but a toothbrush or something works fine.

I really like these nut files well made work very well, cut nice easy to control and work with. Very perfect cuts, you can be dead on accurate with these or you can be aggressive and still file very good and straight. Best files i have ever used for nuts, want to buy every single size they have now LOL

Excelente compra , son de gran calidad y precisas

A good tool if used cautiously. I've improved the setup of 2 guitars so far. What is the value of a more playable guitar? These is space in the box for other files. Its a pity that they don't sell a 0.08"