The file 'GoPro Tripod Adapter 3D Printer Model' is (STL) file type, size is 4.5KB.
For use in Quick Release or has center hole for 1/4 tap. You might have to drill out the hole if you don't have a tap.
Pretty much the same as another one out there but designed from scratch for easy printing without support.
Mine was a nice and snug fit, no wobble.
Tripod_Quickmount_for_GoPro.STL | 22.0KB |