The Gitzo GH1382TQD Series 1 Traveler Center Ball Head is an Arca-type compatible head that is an ideal match for Traveler Series 0 and 1 tripods. It stands 4.1" high, holds up to 24 lb, and weighs 0.9 lb. The head has a separate lock for the 360° panning and another to control the movement of the ball. A tungsten disulfide coating on the ball helps keep the ball movement smooth and minimizes stick-slip. A screw-knob lock tightens down on the included quick-release plate and a bubble level helps you maintain straight horizons in your images.