This holder was designed for a scrub daddy sponge and blender bottle 2-in-1 brush. Placing the brush puts a bit of force backward on the mount so securing the base with double sided tape to the sink works best to keep it steady.
Link for brush: https://a.co/d/0g2sCL2
Brush_and_Sponge_Holder_Assembly_Generic.stl | 1.2MB |