This is a camera mount. Installed on molding.

I use a video camera for overtaking. The police have a negative attitude towards the devices installed on the windshield with the help of a suction cup. Therefore, I made a special mount that can be adjusted in three planes. Keeps very tight.
You need M4X10 and M4X16 + screws.
Two tubes are installed inside. I used copper sleeves of a suitable diameter, which are commonly used for crimping wires. I installed one. You can opt out of installing them.