The Zicro Coldshoe allows you to mount any device with a hotshoe adapter to a 15mm rod, Zamerican Arm or ZUD. Now you can easily mount any light, sound recorder, microphone, or other hotshoe accessory to the Zicro Coldshoe, slide it onto a 15mm rod, and quick release with the red lever. You can also mount your C300 monitor directly onto the Zicro Coldshoe and onto any 15mm rod on your rail system.