Originally Posted by nein

In fact the one I use is like a soft and thin wire wool impregnated in a kind of soap. I have not seen any scratches on my link pipe. That's just my experience.

if you decide to try it, make a test first in a not very visible part to make sure you also get the results you expect.

I did recommend it to a colleague and he has also used it on his bike with no problems (a BMW one)