I bought these for a mandolin kit I got from the US.
The kit frets were thin, low and very badly installed. I chose the 6230's because they seemed to be the ones most likely to work on a mandolin.
They were a good choice, being easily installed once the fret slots were made wider and deeper.
They've been on for some time now and are showing no signs of wear, despite being played quite a lot.
I have no hesitation in recommending these frets.