Go-Pro Double Arms

I have found a few double arms for Go-Pro mounts, but they were all solid arms, none that were adjustable. So these arms are separate, each side can be positioned interdependently. This definitely isn't the strongest design since the central parts are so thin, but it should hold up to light abuse. The arms are 1" and 1.5" hole-to-hole (per side), and the holes are sized for a M5x0.8 1D Helicoil.

M5x0.8 1D Tangless Helicoil - https://www.mcmaster.com/91990A422/
Tap & Installation tools also required.