I got the metal roller hooks at C&B about 3 years ago for two bathrooms. Both sets still look brand new, no rust.

Here is a link that might be useful: C&B roller rings

I got mine at Target and they are their brand. They came in chrome or brushed nickel--we went with chrome to match the fixtures. They have the glide beads along the top where it hooks onto the shower curtain rod and then a double sided hook at the bottom for the liner and curtain to attach on opposite sides. Been in use for 2 years with no rust. Very economical too--I think they ran ~$12 per set. They are not available online--only in the store.

Hope this helps!

I have the same ones mydreamhome mentioned. I love how easy it is to put the curtains on and off, and no rust yet.

Can you share item number or picture of ones you bought at the store?