Buy on Amazon.com : http://www.amazon.com/gp/product/B000T4BE84?tag=lottalatte-20 <br /> <br />Westcott 3.9' to 6.5' Adjustable Chrome Boom Arm with 6.6 lb. Counter Weight <br /> <br />Internal Dimensions <br />Weight <br />Volume <br />Load Varies with type of stand used <br />Attachment 58 stud with 14-20 rapid adapter Mounts to standard 58 Top
