Our Versa Series Quick-Columns give you the option of variable height adjustments without having to adjust your tripod legs. When installed, the quick-column replaces the platform on your tripod and provides up to 11" of vertical travel. All Versa Series 2 Tripods accept the TA-2-QC. When traveling, consider removing the quick-column and leaving it at home, keeping your RRS support package as light and compact as possible. All Versa accessories are easily removed using a 1/8" hex key (included with tripod).