I designed this holder to me attached to an old holder we had from Amazon. But the old holder could not handle the load. So now we just have it mounted with glue gun. But you can remix it in anyway you like to have it mounted/standing to your needs.

I wanted the toothbrushes to be upside down, because at the brush is where all the water is coming from, don't want it to drip down on the whole toothbrush and cause a bacteria dreamhome.

The holder itself is really good, i'm glad with the design. But the mounting bracket will maybe be redesigned in the future for whatever need I have, but it works for now.

And as you can see from the picture, it works fine with different sizes. Just standard Oral-B toothbrushes.