This is a 2" hitch receiver mount I designed for use with GoPros as well as other action cameras. Any action camera that uses the universal GoPro style mount should fit. I wanted a place to mount my GoPro on the back of my truck without using suction cups or other methods of mounting. This mount has receiver pin holes on all four sides so you can orient the camera to the rear, up, down or to either side. The holes for the hitch pin are slightly undersized, a few minutes of filing will ensure a tight fit. The nut slot is just slightly oversized but I recommend using an M5x0.8 nut/acorn nut(standard GoPro size), the nut just needs to be glued into place. The four small holes on the front are only there to let water out to reduce the chances of water/ice building up in the mount. I printed this using an Anycubic Photon and a mix of Siraya Tech Blu and Siraya Tech Fast white resin. I removed supports, cleaned, cured, and did filing first. Then I encapsulated the nut with Siraya Tech Blu(using a toothpick) and then cured in my UV curing box for a second time, it's a very strong hold. I've tested this thoroughly over the last few months with no issues, even over pretty rough terrain. This item may or may not need support depending on printer type and orientation. I uploaded a picture of the way I oriented mine for printing in case it helps.