Bought this set for my new GT Steinberger, the overall quality is just OK, nothing too diferent about this double ball end set, certainly not in the level of D'addario.
The first string lasted a month (and I really really but really rare brake strings), so was this just a lemon set? maybe, just maybe, but because i'm not going to try them again I'd say just meh!
Now, if you need a 11-50 double ball end set, then you are out of luck because you'd just have to buy them, or get the adapter for normal strings, or change the steinberger's nut.
Meh!... not spending my money in these strings again