Misc. Does anyone know what this connection set up is for on the front bumper of my CJ5?

[Ironman]

Does anyone know what this connection set up is for on the front bumper of my CJ5 ? To use for towing would be my guess, but no idea of the set up. Also, I want to connect a shackle. One seems to thin and would be too much play on the shackle. Shackle won't fit between or outside both horizontal plates. Wondering how best to make in to a shackle connection point.

 

[Belizean]

A little hard to see, but looks like it is set up for flat towing

 

[CJ]

Definitely looks like it's for a custom flat tow bar.