This was specifically made for the bolt holes of a generic Android Auto Screen from Amazon but you could probably mount just about anything you like. It could probably be a little shorter, but I needed the extra distance for the back of the device. The cables can then be run through the channel in the top.
The original device is:
https://www.amazon.com/gp/product/B0BK5WTZPC/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
The author marked this model as their own original creation.