This string is called Kirschbaum Gut Feeling (haha). I think this is probably the string Paul Coll plays with.
Paul mentions here that he plays with “Kirschbaum natural gut”. Kirschbaum do have a Natural Gut string but I’m guessing Paul uses the “Gut Feeling” string in Natural color. StringJob.nl says he uses the 17 gauge version.
Thanks B, M, and Tjeerd for the tips.


17 Gauge / 1.22 mm

18 Gauge / 1.15 mm

19 Gauge / 1.09 mm

Pierre says
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Thanks guys I updated the post. Between the note on StringJob.nl and the fact that his wifey’s a vegan, I’m guessing he uses the Natural Gut Feeling and not actual gut.
M says
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Hi Pierre,
Kirschbaum has some real gut strings in their product range https://kirschbaum-strings.de/produkte/produktdetail/touch-natural:268
but I hope we (or paul) are past these times…
John says
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I think this is it M.
I am the one who asked him on IG, for him to to include the word natural in the first place, I am thinking he means these. They aren’t sold in the US, only in Europe from what I can gather.
Tjeerd says
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I think we have an Babel-like confusion on our hands. 🙂
StringJob.nl, which is supporting Paul Coll for stringing and racket tuning, explicitly mentions that Paul is using strings with a gauge of 1.22mm. The Kirschbaum Natural gut (product name: Touch Natural) is available only in the gauges ~1.25mm and ~1.30mm, not in 1.22mm…
So, my 2 cents after summing this all up:
I think Paul is playing with Kirschbaum Gut Feeling 1.22m in natural color (in German “Farbe Natur” and ironically the only color available for this string).
Tor Schjølberg says
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What on earth! Is he not using Ashaway or Tecnifibre? IT’S A SIN!! 😉
Tjeerd says
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Hi Pierre,
Good find! It triggered me to do a little research myself: some more details can be found here. Paul seems to play with the 17 gauge / 1.22mm.