I was told that these should work for 9.5" radius fingerboards. The problem is, they are bent to more or less exactly 9.5" radius. They really need to slightly more curved to avoid the ends popping up when hammering the frets into the board. Manually bending a longer piece of fret wire is no problem but it's a bit tricky with these short pieces.
I got a good result in the end but it was a bit more fiddly than I hoped for. Longer pieces of fret wire, or the pre cut frets from Stew Mac, are much easier to work with, I will not buy these again. At least not for a 9.5-10" radius board. I guess they would work better for a slightly flatter fingerboard like 12" but the product description really should specify this and Thomann should give better information when asked about it.
