The Manfrotto MHXPRO-BHQ2 XPRO Magnesium Ball Head enables you to fine tune your composition thanks to separate knobs for both the ball and the 360 panning, as well as a friction control knob for more exacting placement. The included 200PL quick-release clamp and plate enables quick camera attachment and removal, and two bubble levels helps to ensure your horizon is level. A numbered scale around the base of the head makes repeating exact pans an easy task.