The Manfrotto 2-Section Single Articulated Arm with Camera Bracket supports 0.88 pounds at full extension. Extra versatility is also given by the sliding extension system which allows for easier positioning of lighting fixtures even in awkward and tight spaces.
The arm's maximum length is 23.8 inches. The bottom 5/8" spigot is compatible with the optional Super Clamp and has 3/8"-16 female threads. The top spigot is also 5/8" but has 1/4"-20 female threads.