I use these metal rods to make the floor of my build cages more stable and they work perfectly I recommend them.

I have found that the older I get, the more I cannot easily get up and down from floor/ground level. I was having a difficult time enjoying the birds I placed on the lowest level of my HT cages. I ordered all the supplies needed so I could extend the legs and raise the 4-layer system up. This rod acts to stabilize the legs and provides strength to the system.