Extend your lighting capabilities with this 2 section wall mounted boom arm. Arm tube diameters: 35.29mm.; attachment: type25 + spigot art. 013; color: black; load capacity at maximum extension: 9.92 lbs.; material: aluminum; maximum extension: 82.68 in.; minimum extension: 47.24 in.; 2 sections; weight: 5.07 lbs.