I have something like this. It's absolute sh1te and will bend with the slightest force
These tend to very quickly dissolve into a rust coloured stain on the ground. I do have one though that I must have put up around 15 years ago. It is rather battered and bent, but still serviceable because when I put it up I painted it with Hammerite and filled it with Waxoil. I had those lying around spare though and it wouldn't have made sense to have bought any. As others have said if you can stretch to it, buy something better.
They do not last long. Better to invest in quality ones.
Please don’t buy this. Terrible quality. Not worth the assembling.