Other Old Guinea Pig Pet Store Cage?

It's way too small for rats, the bar spacing are way too big for dwarf hamsters and mice but, it may work for a larger syrian hamster.

So Syrians are my only choice?

The spaces between the bars are far too big for a Syrian hamster of any size. It would escape in a second, sorry. It's really not suitable for any of the above rodents.

oh ok. thanks.

I would just use it as a transport cage for if you need to take your pigs to the vet or something or to put them in while you clean the main cage. Its too small for rats, and the bar spacing is too wide for smaller rodents unfortunately.

Yeah I use this cage as a transport. When I clean theyre C&C cage, i give them floor time by using extra grids as a barrier.

If you are planning on getting a hamster here is some Helpful Info:
https://www.guineapigcages.com/forum/showthread.php?p=217184&posted=1#post217184 (my post)
and
(broken link removed)