This was a surprisingly good purchase. The backdrop stand is quite stable for a portable appliance (I have routinely taken mine up to 8 feet with no fear of tip-over). The height is easily adjustable with twist release clamps.
The length of the center bar can be set at about 5 feet by using just two sections, almost 8 feet with three sections, and about 10 feet when all four are installed. At 10 feet across I have draped two muslins for no-wait backdrop changes, I just have the model move five feet to the side.
A bonus is the high quality protective carry case. There is an individual pocket for everything in the kit, and possibly room for a single backdrop cloth (I use a separate bag for my backdrops). The only thing missing here is a shoulder strap for the carry case.
A word of common sense: this is a portable stand for muslins and works well for my home and road studio, but I doubt it would hold up well for the rigors of industrial professional studio work.