Gitzo GT1530 6X Carbon Fiber Series 1 Mountaineer 3 Section G-Lock Tripod ALR - A new Anti Leg Rotation system, which means the tripod can be opened in less than 15 seconds. G-Lock: The Gitzo leg locking system has been completely redesigned in order to achieve a 20% increase in rigidity, faster operation Ground Level Set: This feature allows you to remove the center column to save weight and get the camera closer to the ground. 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.