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.GH1780QD is the compact Series 1 version, and features a hybrid quick release system which comes with an Arca-Swiss style plate but also accepts the traditional Gitzo C-profile plates. The camera/plate can be snapped into the head from above, which is fast specs ball locking yes series 1 material magnesium quick release yes plate type GS5370D panoramic rotation 360 degrees lateral tilt +95 Degree / -13 Degree tilt range ball friction setting no working height 4.13 in weight 1.1 lbs safety payload 22.05 lbs