Guinea pig (or other small pet) playpen fence

Bought off Amazon in 2018, mainly only used the one (as you can see in the photos, it has some rusting around the joints and is a little bent) used to bring our guinea pigs outside. Second fence was used when we wanted to make a very big safe space for them to run From Amazon listing: Ideal for hamsters, gerbils and other small pets; Gap between bars: 1 cm Here is the listing https://a.co/d/028eP40u