Gitzo GT2530EX 6X Carbon Fiber 2 Series 3 Section G-Lock Explorer Tripod ALR - A new Anti Leg Rotation system, which means the tripod can be opened in less than 15 seconds. The Gitzo leg locking system has been completely redesigned in order to achieve a 20% increase in rigidity, faster operation and stronger locking Hook: This built-in accessory allows you to hang a stabilizing weight from the bottom of the tripod center column. Rapid Column: The center column locking collar above the tripod shoulder makes it easier to adjust the column quickly. Leg Ends: This is the removable rubber feet provided with the tripod.