This sturdy clamp can be used with our mating 17mm products to hold a cell phone, GPS, camera, or small tablet just about anywhere. The clamp quickly adjusts to fit any round bar with a diameter between .6" and 1.6" by tightening the rubber-lined jaws with the thumb screw. Can also be clamped to flat or odd-shaped surfaces such as a table top or even some car door handles (not S2000 though). The adjustable ball design allows tilting your device up to 40° in any direction and also provides a full 360° of rotation.