I haven’t seen one of these in a few days, so I thought I’d toss in one of my own.
It’s meant for via ferrata to reduce the impact of falling on static gear. You loop a short rope through the holes and it absorbs the forces of the fall by friction of the rope slipping through. This is the Kong Kisa.
Haven’t seen one exactly like this, but looks like a lock out tag out deal.
It is not, but I can see the resemblance