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