The Gitzo GS3511KB low level column kit is an intermediate length Column that comes between the standard center columns supplied with tripods and the very short columns previously supplied as separate accessories. Their lengths are defined to achieve the lowest shooting angle with legs not extended but opened to the widest angle. Column kits are in Carbon 6X tube and also incorporate the components for the Gitzo Ground Level Set: machined aluminum Safe Lock upper disc, new reversible screw and new extensible hook. This is the most convenient way to update previous carbon fiber, basalt and aluminum Gitzo tripods to the latest specifications and development. This center column replaces the Gitzo GS3510KB.