SmallRig 11" Articulating Arm 2066 is equipped with 1/4"-20 screws on both ends respectively. Thus, it could attach monitor via the 1/4"-20 screw on the one end and attach accessories with 1/4"-20 threaded holes on the other end, like NATO Rail 1973. Mounted with 1/4"-20 screw is a rubber cushion that protects monitors from scratches and helps to lock the monitor tighter. It features an ergonomic wingnut for great convenience that could help to adjust any angles based on your needs. We combine shipping.