It's not a great kit if you are doing fine detail soldering. I was hoping to repair some headphone cables which are multiple strands of very fine copper wire. The solder just runs right off it, no matter what I do. The flux that comes with it is not helpful.
I asked about it in some forums and was told this soldering iron probably just doesn't get hot enough for what I'm doing.
I'm not willing to drop the review below 4 stars though, because the kit comes with everything you need and plenty of heat shrink tubing. But get a better soldering iron. I was recommended to buy a fine tip head for one too, and also to try AMTECH solder flux. Haven't tried those though, but if you have a similar repair, consider getting those too!