The Avenger A4039CS 12.8' Steel Boom Stand 39 is a heavy duty, chrome-plated steel support that can be used traditionally as a light stand or converted to a boom via a pivot in the first riser. The A4039CS also features a leveling leg for rough or uneven terrain. An optional counterweight is strongly recommended when using the stand in boom mode.
| Construction | Chrome-plated steel |
| Maximum Height | 12.8' (3.92 m) |
| Minimum Height | 4.8' (1.31 m) |
| Riser | 3 Risers, 4 sections |
| Column Diameter | 35 / 30 / 25 / 20 mm |
| Leg Design | Square |
| Wheels | No |
| Closed Length | 3.7' (1.13 m) |
| Footprint Diameter | 3.6' (1.09 m) |
| Attachment Size | 5/8" (16 mm) Baby stud |
| Air Cushioned | No |
| Maximum Load | 26.46 lb (12 kg) |
| Weight | 18.52 lb (8.4 kg) |