This is a more versatile version of Bogens single articulated arm. A telescopic features makes this product even more compact than before and a camera bracket allows precise camera angles. Arm tube diameters: 13mm.; attachment (bottom): 16mm spigot with 1/4-Inch thread; camera bracket with 16mm spigot and camera attachment; color: black; load capacity at maximum extension: 3.31 lbs. material: aluminum; maximum length: 23.82 in.; 2 sections; weight: 1.17 lbs.