Perio interdental brush

This is a Perio interdental brush.

I bought two sizes when I first purchased it.

If you are not familiar with it, please make sure to start with size SSS.

I remember struggling because it was harder than I thought.

I think it would be good to increase the size after you get used to it.

You all know that refreshing feeling of blowing away the unsatisfaction of brushing with an interdental brush, right?