I just started darning this year, so as a first timer it was great to have everything I needed in one place! The needles are plenty strong and won't break if you use them right, and there's plenty of thread so it'll last a while. I will say the included cutting instrument isn't the best, but getting a tiny pair of scissors isn't hard to do.
I love how this kit has everything you will need to darn your shoes. It makes the task of learning to darn shoes much less daunting if it is your first time.