Adorama Pro Super Clamp with Mounting Stud. 1/4x20 Screw Threads.

Has thousands of uses! No camera bag should be without the Pro Clamp. This universal clamp can be securely mounted on any tube from .5" to 2.1". Supplied with a unique wedge insert for clamping onto flat surfaces. A built-in socket allows the use of many Bogen attchments to hold anything from backgrounds to lighting fixtures. Stud included.