SmallRig universal 15mm LWS rod mount lens support 2727 is designed to provide lens support and protect the mount for the lens. Use the thumbscrew to adjust the vertical height. The support protects the lens with an external diameter of 73-108mm. The V-shaped bracket has a built-in pulley, and the usable position is not limited by the position of the zoom ring or the focus ring. It provides stable support & simple installation, which makes users feel comfortable.