This is not the best kit if you enjoy soldering small parts. I was hoping to fix some headphone cables, which are multiple strands of very fine copper wire. The solder just drips off no matter what I do. The supplied flux is useless. I've asked this on a few forums and have been told that this soldering iron probably just isn't getting hot enough for what I'm doing. I don't want to downgrade my rating below 4 stars. though, because the kit comes with everything you need and a lot of heat shrink tubing. But get a better soldering iron. I was also recommended to buy a fine tip head and also try AMTECH soldering flux. While I haven't tried these yet, if you have a similar fix, consider this one too!