1. It is equipped with 1/4" screws on both ends respectively.
2. It could attach monitor via the 1/4" screw on the one end and attach accessories with 1/4"-20 threaded holes on the other end.
3. Mounted with 1/4" screw is a rubber cushion that protects monitors from scratches and helps to lock the monitor tighter.
4. It features an ergonomic wing nut for great convenience that could help to adjust any angles based on your needs.