This is a mount designed to mount a Recsea GoPro (9, 10, 11) 300m housing and OrcaTorch D560 lasers to the bottom rail of a BlueROV2.
GoPro housing is attached using a standard ¼" thumb screw. Lasers are attached using a small hose clamp on each. Lasers can be calibrated as the they turn on and off through the twisting of the body, independent of the laser head.
The author marked this model as their own original creation.