The Cobalt Cage is made of precision-machined aluminum and it's surrounded by 22 different 1/4"-20 threads for more flexible mounting options. You can use it to attach support rails, suction cups, clamps and more. You can also mount the GoPro using a true triangulation method for minimized vibrations. The Cobalt Cage works with all GoPro accessories as well. Plus, since this kit includes accessories that allow you to use the GoPro and Cobalt Cage together without the underwater housing, you'll be able to eliminate the fogging that can plague otherwise clear shots, while still keeping the camera protected.