Gitzo?s Center Ball Heads are designed to be an extremely balanced product, that not only guarantee a high max load, but also maximizes other key features including minimized drift angle, reduced weight, lowered center of gravity, increased range of tilt angle, compactness, ergonomics and safety.GH2780QD is the popular Series 2 version, and features a hybrid quick release system which comes with an Arca-style plate but also accepts the traditional Gitzo C-profile plates. The camera/plate can be snapped into the head from above, which is faster and easier than trying to slide it in from the side. By simply removing the adaptor from the head, it will also take Gitzo C-profile plates, especially useful for photographers who already own and use our plates as standard. specs ball locking yes series 2 material magnesium quick release yes plate type GS5370D panoramic rotation 360 degrees lateral tilt +100 Degree / -18 Degree tilt range independent pan lock yes ball friction setting yes working height 4.72 in weight 1.54 lbs safety payload 30.86 lbs