I use them to clean around my braces and they work wonders. I like varying the sizes. This is a good size for that.
The shipping and handling was a rip-off
a small is too small, and a large I could not get between all my teeth, could not by medium in any store in my area. So I ordered $50.00 of moderate on line now I have a bunch that I CAN NOT USE, MODERATE IS THE SAME SIZE AS LARGE.
What I thought I had ordered was the proxibrushes used in the handles. But as I am now using the little proxiebrushes complete with holders, I have discovered I like them and will continue using them.