Matthews Reverse Stand - 7' (2.1m)

Being that this stand has a weight limit of 11 lbs, you could hold a roll of 53 seamless from a crossbar, but holding a 86 seamless roll would not be safe.

The Matthews Reverse Stand - 7' (2.1m) BH #MAR is made in California, USA.

I’m not familiar with that light. I bought it for a lightweight LED light. It is a lightweight tripod

I would not risk it unless you sandbag the base. This stand is very strong, but lightweight. I have a couple and love them. In studio I use C-stands but In the field almost exclusively. I frequently use them with Profoto B10's and 48 inch OCTAs. I have also used it with a 60inch diffused umbrellas... but Sandbag, Sandbag, Sandbag! Word of advice... I would also get the Matthew's Telescopic Baby Stand Extension to go with it to increase the height. I think it is adds additional 4 feet. Plus you can use them as a handheld pole for small strobes.

No, the stand cannot support the weight. A stand as a rule like a tripod should support around double you are putting on it. The stand can support 11 lbs and the light with six bulbs is about 10.5 lbs and that is without any softbox or umbrella.

I do not recommend using this stand with octabox this big.

The diameter of the thickest section of riser on the Matthews Reverse Stand - 7' (2.1m) is 30mm.

The height on the Matthews Reverse Stand is measured with the legs at their highest position.