YSSOA Heavy Duty 5-Tier Shelving Unit

I wanted a shelf for my closet to put my cookware and food as I live in a shared apartment and wanted to keep my own stuff in my room. There is barely any assembly instructions and it came with these plastic cap things that were not even in the instructions. It is very simple installation, but I believe it should come with better instructions. The caps were flimsy and would pop off instead of snapping around the metal bar and the wheels don't move very well on the floor as the lock and unlock mechanism didn't work. Because the plastic caps were flimsy, putting the shelf over them evenly is not really possible, but it's passible for what I wanted the shelf for anyways. This shelf is advertised as heavy duty, but I really wouldn't trust it to hold a lot of weight. However, the shelf is lightweight so I could easily pick it up and put it in my closet space. Also it does do exactly what I needed it for, so I'm happy with it. I am rating 3 stars despite this due to the lack of decent instructions, just cheap and flimsy plastic caps to place the shelf on that a few came broken as well and is definitely not easy to adjust post setup, and I would not put anything extremely heavy on here. If you just need a cheap shelf that won't hold anything too big or heavy, it's good enough. There's probably other options though. Assembly and disassembly for moving is not ideal either.