It offers the perfect combination of height, lightweight design, durability, and uncompromising stability. The Systematic family not only produces the most robust and stable tripods from Gitzo but also sets the industry standard for modularity. The upper casting of the GT4553S can be opened and closed, allowing any tripod to be equipped with a flat plate, a crank/slider center column, a video adapter (half bowl), a leveling base, or any other Systematic accessory.