The 501HLV is a spare pan bar for use with the 501HDV video head.

The pan bar uses the principle of the lever to use less effort to support and move the weight of your camera and to iron out any jarring or shaking movement between your arm and the camera. Ideal for equipment used in movement - especially videocameras and sport optics / spotting scopes - but also very popular among sports and nature photographers who use long heavy lenses and need to smoothly track moving subjects.