Multi Function String Action Ruler Gauge,9 Understring Fretboard Guitar Radius Gauge, 13 Different Stainless Steel Needle Files&Grinding Stone Kit 6 Sand Papers for Electric Acoustic&Bass Guitars

You clearly won't get the results with this set that a luthier would, using e.g. proper nut files, but they did help me improve the action (cut the nut slots lower and adjust the bridge) on a guitar during COVID19 when luthiers near me weren't accepting customers. The radius gauges and the string gauge are useful. The "nut files" work in an emergency but can't really do the job that proper nut files can. I can't see the finer ones surviving more than a few repeat uses.Something to mention is that the radius gauges and the action gauge are "unfinished" metal. They have been cut, but nothing has been done to file off the very sharp edges left after they have been cut. Both (esp the action gauge) are sharp enough to easily scratch your guitar (fretboard/top). If you're planning to use these routinely it would be worth taking a fine file or emery paper to the edges.

The needle files do an adequate job, if you take a little care. The radius gauges will come in handy. The ruler is useful during guitar setup. The little squares of sandpaper are the type of thing that you would have around anyway. Overall, a useful addition to the guitar tinkerer’s tool box, especially if you don’t want to or can’t run to the expense of proper expensive nut slotting files.

this small kit allows you to learn how to take care of your guitar , and by doing so it may also help you play better ,it would be a great help if this kit was also supplied with a truss rod Allan key and a fret board length straight edge ,yes I know that there would be a increase in price but I for one would buy the new kit , but if you are looking to do some guitar neck//fret board adjusting then this may be the kit you are looking for ***** stars

I have found these tools easy to use, there are so many options for string thickness they should cover every guitar, not just the standard 6 strings of the expensive files. I like that they come with the radius gauges and measure too so you can be more self sufficient than ever before when setting up your guitar. I have already found them invaluable improving the playability of my favourite guitar.

Couldn't find any way to contact the seller but the string height ruler arrived slightly rusty. Still functions but you might want to check your stock before despatch.

Very simple to use

I like this set, and has had limited use, but overall quite happy with it

Not top quality tools by any means but great value for money when you have a couple of jobs to do or to keep for emergencies.