The Manfrotto Super Clamp without Stud is an ideal clamp for film, video, and photographic applications. It can be used to hold lights, cameras, reflectors, cross bars and countless other items from tubing that measures betwwen .5" - 2.1". There is also a wedge included so you can use this clamp on flat surfaces. The wedge can be found on the small t-handle, simply remove and snap into the jaw of the clamp to use it. The clamp features an ergonomic lever to securely lock the clamp into position.