The phot r helmet arm extension kit for gopro hero allows you to capture more of yourself your surroundings in the frame you can also attach the arm to your surf board mount or suction cup mount for an extended fixed perspective allows you to capture more of yourself your surroundings in the frame best way to fix your camera to your helmet attaches to your helmet with a 3m curved adhesive mount for fast clip also attach the arm to your surf board mount or suction cup mount for an exten