This kit has everything that someone wanting to stretch their ears in a simple, safe, and economical way would need. I have so far stretched to an 8G using this kit, and I have no complaints at all. Things to keep in mind when stretching with this kit: make sure to wash everything before you put it in your ears, go slow when stretching (some of the tapers have a faster size increase than others of different sizes), and wear an o-ring in front of the tunnels too. I read many reviews before I bought this kit, and I have to agree with other people who said that the tunnels can go through their piercing and be quite painful. It has not happened to me, but I could see how it could. So I take two o-rings from the tapers (you shouldn't be wearing the tapers long-term anyway) and use them in front of my tunnels.

Update: I am now at a 2g, and I still love these tunnels! I have not found better steel tunnels than these. They are my go-to, basic plugs when I just want to wear something comfy yet sturdy. However, I now am using the taping method to stretch, so the tapers are not useful to me anymore.