Holds the magnetic base of the Oral-B iO 9 with a cutout on the side for the cable (If you have a different model/dimensions I'll be happy to modify it), it has two holders for the brushes, enough space for toothpaste and hand sanitizer or something else, and a drain in the front for the water go back into the sink. Based on the dimensions of my sink this was made so it would sit flush against the wall and be flush with the sink.
NOTE: If you have other model send me the dimensions and I'll happily add a model with the right insert.
Version 2: