I ordered these because I wanted something different than the plain surgical steel tunnels I was wearing.  They were still surgical steel, yet different and cheap and I didn't want to spend a lot of money on tunnels in smaller sizes I wasn't going to wear very long.

These are exactly as advertised.  Comfortable to wear and easy to screw on, but tougher to unscrew as it seemed like they would overtighten (maybe it was just me) and then seem like they were stuck.  They never came apart, though, and never fell out, so that's a plus.  Comfortable to sleep in, too, since I was worried about that.  The front and back aren't too thick, either, so they sit comfortably in the ear.

I would buy them again if I needed to, but I'm moving up.  I would recommend them to anyone who was looking for a good pair of screw back tunnels, I would just caution you to make sure not to overtighten them.