There are two balance springs in the vertical tilt (forward/backward) and horizontal tilt (left/right) movements. These springs enable you to more comfortably handle heavier camera loads (such as very long lenses) with minimal effort. Both springs can be turned off in case normal head operation is required. The head is comprised of aluminium and designed in a manner to support up to 8kg yet lightweight and small enough to pack in any camera kit. The standard quick release system is used to accommodate larger camera platforms which incorporates dual axis bubble levels to achieve level shots.