This is an Impact Convertible Boom Arm/Light Stand. As a light stand, it can support a small or medium light head to a height of 13' (4 m). Raise the second section completely, click, and it is a boom stand.
As a boom, it can hold a small light head to an extension of almost 3' from the center of the stand.
It is a reflector holder by means of its two clips, which can support an Impact, Flexfill, or Photoflex light disc as large as 60".
A hole at the end of the arm allows an optional counterweight to be hung, for greater stability.