The SL200 Carbon Fiber Center Column is an accessory carbon fiber center column for select Sirui tripods. This lightweight column features a twist-lock joint that allows it to extend 4.7" from a folded length of 7.9", for a maximum length of 12.6". It incorporates a reversible 1/4"-20 to 3/8"-16 head mounting screw and adds a mere 8 oz to a tripod leg set.