If you're like me and keep forgetting what size piercings you have this is a good tool.

I was hoping for a little bigger one, like the ones the professional piercers use, where I can just put it onto my piercing without taking it out. This one however, you need to remove your piercing and try to squeeze it in one of the holes.

Made out of some kind of metal makes it sturdy and it doesn't feel like it's gonna break just by looking at it.

Can't really speak of how exact the measurements are, since I've only tried one of the holes, but that one seemed to be correct.