A drop in replacement for the laser cut plywood GoPro mount that comes with the kit. My original broke after a few 'pilot errors'... One adjustment I've made (not to the print... but how I fly) is to put a rubber band around the actual gopro2 as I made the box a little bigger to make it easy to get it in/out. The rubber band holds it in snuggly and stop jello from it rattling around in the plastic.