GoPro back-to-back rig

This a 2 camera "back-to-back" rig for 360 video. In this setup you can shoot a full 360 video with only two cameras (and two ultra-wide-fov lenses).
This rig allows access to all camera ports (USB, HDMI, SD slot) and buttons.
The cap allows you to use an additional item (e.g. spatial sound recorded).

You will need:
2 M3x18mm screws
1 (1/4inch) x 1inch screw
1 (1/4inch) x (5/8) screw

A an adaptor for coupling with your tripod mount (see pictures)