Aquila strings are highly regarded for ukelele. And rightly so in my option!
I'm not a serious uke player, mainly a guitarist. But for a very reasonable price you get really good strings from a very reputable manufacturer.
First class service from Thomann, as always, so what's not to like?
Very happy with these, and my ukelele sounds great - of course, do bear in mind, that nylon strings like this take some time to stretch and will need re-tuning over a period of time, until they settle down.