Hoffman CCS814RL, Rotation Limiter, Pendant Arm, Fits 80Sq, 80X140Mm, Steel/ZincAccessory for use with Wall Joint, Cable Wall Joint and Intermediate Joint. Limits the rotation of these joints which normally rotate 180 degrees. Rotation Limiter provides stops in 15-degree increments. The limiter is a heavy-duty steel disk that attaches to the pivot point on each joint. Moveable stop pins provide adjustment.