This Camvate combined setup makes it convenient to support the on-camera monitor right above the cage while you're doing photographic practice.The monitor support holder comes with a 1/4"" thumbscrew which universally accommodates various kinds of monitors with a 1/4"" thread hole. With 180 degree rotating design, it's quick and easy to adjust the monitor viewing angle forward and backward.The quick release Nato clamp comes on the bottom of the support holder, which can be easily attched to a Nato rail..