Nechkitter Metal Skeleton Thick Solid Protective Case with Lens Cap and Flash Mount and Wrench for Thumbscrews for Gopro Hero4 Session Hero5 Session black Aluminum alloy CNC injection molded, extremely rugged and high quality build. D-ring locking screw ensures convenient and safe installing and release 1/4" screw hole On the bottom,with side and head for mounting accessories. Could mount on bicycles, hand rack, helmet, chest belt, etc. Significant sound recording and cooling function.