This is a rear camera mount (gopro style) for the 3DSets Bamboo 4x4 model.
Replace the rear bolts with 2 M3x25 to attach the camera mount to the rear bumper bracket.
I wanted a low profile look and to help with clearance so I got 5x.8mm nuts and 5x.08 x 20mm bolts from Home Depot and designed my own plastic nut to go around the bolts.
I used GoPro style brackets from jackw01
https://www.printables.com/model/145020-assorted-gopro-mounts
The author marked this model as their own original creation.