This product consist of two parts: plate and rod clamp. Aluminum plate has 3x8 mounting points for V-Mount Battery and three cold shoe mounts for other accessories. Plate is attached to the rod clamp by three screws - this point of attachment is also the positioning point, where one of two positions can be set (vertical or horizontal). 15MM Rod Clamp is set in place by two thumbscrews, located on each side. Safe usage is guaranteed by rigid and solid structure.