This is the Manfrotto 098B Wall Mounted Black Boom Arm. Unlike the Auto Boom, which may be attached to a wall or a stand, this boom arm must be attached to a wall. It telescopes out from 47.2" to 82.6" long (1.2 - 2.1 m).
This item Replaces #3077, 3077B
2 Telescopic sections
160° Vertical and 180° horizontal rotation.
In the Box
Manfrotto 098B Wall Mounting Boom Arm, Black - 47.2-82.6" (1.2-2.1m)