The Max Arm allows you to easily adjust the position and angle of mounted items with ball jointed studs that rotate 360 degrees, and a cut-out in the sleeve surrounding the ball allows the stud to be bent 90 degrees. One stud is tapped to receive a 3/8"-16 thread while the other is tapped to receive a 1/4"-20 thread. An additional adapter spigot (KS-054, not included) can convert the 3/8"-16 female thread to 1/4"-20 male thread for mounting cameras & camcorders. Further more, the 1/4"-20 female thread on one end of the Max Arm matches the universal mounting system of AbleNet switches. The central elbow rotates 360 degrees for infinite adjustability and is equipped with user-replaceable special friction discs with anti-slip rosettes to prevent unwanted movement. The large rubberized hand wheel slowly increases tension until all three joints lock simultaneously, making precise positioning a breeze. The hex studs of the Max Arm can be inserted into compatible attachments such as the Thick Table Clamp (KMB-600) and the Super Convi Clamps (KCP-700).