The original Super Clamp that has thousands of uses. No camera bag should be without one. The Super Clamp holds just about everything: cameras, lights, umbrellas, hooks, shelves, plate glass, cross bars, even other Super Clamps! And they hold these items to just about everything: poles, posts, tripod legs, pipes, doors, stands, and beams - virtually any support you can get the Super Clamps wide jaws around. This clamp replaces the Manfrotto 2900.