I got the bars because I was adding a top to my C7C cage, adn the bars are great!
Well of course you will need to buy more than just a support rod (lol) but I mean, even if you are building your own cage from "scratch" (etc.)... The support is unbelievable! I connected multiple XL cages together so of course needed A LOT of support in order to hold up all the roofing (these were also covered cages!). I was able to fit in these support bars no problem and it held up 3 XLs together! And like the writer below said, they aren't even noticeable when you match to your grid colour! ;) I don't even know of any other piggy cage place/store that offers these type of amazingly strong support bars with such a clean look to boot! ;)
Love the support bars! They're perfect! I use them to support the base of my patio! So simple and sturdy! You can move them to fit your needs. Doesn't add bulk and is not noticeable as long as the color matches your grid!
This works perfect for my loft,took the little bit of sagging out of the middle!!
They are extremely well made and sturdy and I recommend them to anyone needing extra support in their cages.
Originally I had my guinea pig cages uncovered. Recently I got a kitten and I had to make lids to protect my piggies. But the middle of them sank in. So with these, the lids can support the weight of the growing kitten. Shipping was a little outrageous. But they did get here very quickly.