This is a remix of the excellent model by ModaModular available here: https://www.thingiverse.com/thing:3630022
I wanted to use this with a Blackmagic Designs Video Assist, but there were some protrusions that meant the original model wouldn't fit. I added them in, plus added another cutout to make sure I was staying further away from the contacts on the device.
I've also included a “short” version which sticks out a bit less from my device.
The author remixed this model.