My mic has a diameter of 6mm (I'm not sure if the diameter is normed or if there is a standard). Various angles are provided: 0°, 10°, 15° and 20°. I personally use a 10° angle. The holder gets stuck on the monitor with doubled sided tape. Within a year of use the holder didn't fall off once.
Width: 20mm
Depth: 10mm
The author marked this model as their own original creation.