I wanted to be able to use this nice GoPro mount for several of my projects, but I didn't want the circular base taking up more space that I needed it to, so I removed it. I added a small base so it could be used with these Brass Knuckles that didn't print out quite right as well as the version with no base at all. I also modified the same GoPro mount so it can be used for the other, 2 pronged, end of the GoPro accessory connection.