The velbon qhd 43d is a lightweight durable ball and socket head designed for on the go photographers who require a fast setup and smooth silent operation the large knob on the side of the ball head controls the axis of movement simply twist the knob for easy positioning of your camera and then tighten the knob to secure the ball head in place the qhd 43d ball and socket head holds up to 3000g in weight measures 92cm in height and is easily transportable thanks to its lightweight profile