I am using Inon floating arms 10" and 8"
It looks like that, but there are also floating arms which looks similar but are made from carbon fiber. You can find on Nauticam and other brands
Once upon a time I was looking for a new solution and prepared something like that not too much useful
How long were the fibre optic cables in that shot? I currently have the std 43cm long ones and they are just..just long enough... I need to replace them with longer ones but unsure between the 68cm and the 110cm...