Short column accessory for THE PROFESSIONAL, THE PROFESSIONAL 4, THE PROFESSIONAL SP. This Short Center Column from Slik is designed for use with the Professional, Professional 4, and Grand Pro CF 4 tripods. As with all short columns, this model is designed to replace the tripods original "long" center column, allowing the tripod to sit extremely low to the ground. The column is constructed of lightweight aluminum alloy, is 12.75" long, and weighs just 12.4 oz. Both sides of the column feature a 3/8"-16 male mounting thread, allowing the user to mount their tripod head and camera either right-side-up or upside-down.