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. Instructions for Using This Stand as a Boom 1. Loosen the large long handle in the middle of the stand. 2. Loosen the top-most section of the stand. Pull that section all the way up. 3. Pull! - swing it horizontally for the boom feature, and lock it for the desired setup. Minimum Height: 40" (102 cm) Maximum Height: 13' (4 m) as light stand 9'(2.7 m) as boom stand, with boom @ 90 degree angle 10.5'(3.2 m) as boom stand, with boom @ 135 degree angle Closed Length: 40" (102 cm) Footprint Diameter: 36" (91 cm) Leg Tip 20mm Weight: 4.6 lbs (2.1 kg) Maximum Load: 5 lbs (2.3 kg) as light stand 3 lbs (1.4 kg) as boom stand Attachment Size: 5/8" stud with 1/4"-20 threaded top Accepts Wheels: Yes Air Cushioned: No