Quality all metal construction with a low profile design for great Garmin or GoPro footage. The Slim mounts are slimmed down to a basic GoPro adapter and base. Adjust your GoPro by rotating the aluminum adapter 360 degrees on a 1/4-20 threaded stud. Lock in place with the jamb nut using a 7/16″ wrench. This Robinson Rib Clamp Base fits the window center rib channel on any Robinson R22, R44, or R66 Helicopter. The clamp also fits 3/4″ tubing such as in Cub or Husky cockpits. This clamp can be easily tightened by hand making it a FAA temporary mounting device. The thumb screw also has a hex drive head allowing you to tighten with the included hex wrench too.