The ProMediaGear PBNZ9 Bracket Plate for the Nikon Z9 is a custom-fit Arca-Swiss plate that is made of aircraft-grade aluminum. It hugs the bottom of the camera tightly ensuring that it will not twist or slip while in use. This bracket plate is compatible with Arca-type clamps from ProMediaGear and even from other brands. Another advantage of this bracket plate is it serves as the base for the ProMediaGear bracket system. This means that L-brackets, flash-brackets, and camera handles can be attached depending on your need. Besides modularity, the PBNZ9 adds a little bit of protection on the bottom part of your camera to prevent scratches.