More on Amazon.com : http://www.amazon.com/gp/product/B00IO7OI5E?tag=thefatkidin06-20 <br /> <br />StudioPRO Super Clamp with Stud for Photography <br /> <br />Clamps onto tubes 13mm-55mm in diameter <br />Includes 38 to 14 thread adapter <br />It can be used on any light stand extension arm or boom arm to secure accessories in place <br />Additional lights or accessories can be mounted on the reversible stud of the clamp
