Shower Roller Tops

We just moved into a new place and noticed the top parts that connect the rollers to the top of the shower were missing. We are hoping to find the parts so that we may fix our shower door. It's a small corner shower with a curved two door. The sticker in the corner says: King Glass Tempered Glass ANSI Z97.1-1984, 16 CFR 120 1 C11, CAN/CGSB-12 1-M. Nothing is missing from the bottoms, just the tops.

I'm not sure if it is the same one. It looks similar, however our shower door does not have rollers on the bottom. Just a hook looking thing. It also only has the one with the flat top, there's nothing that has the curved top with the little knob on top. Is it still the same product? (And if it is, is there any way to purchase just the ones with the flat top?)

Hello,
I don't need the bottom part, I need the top part. The two rollers on the top are missing. I need two top rollers. The bottom pieces are all there. One of your rollers in the 10-058 looks like the top roller I am looking for, but I need 2. Does that mean I need to buy two sets? Or would I be able to somehow use the bottom roller that comes with it as a top roller too? Or is there a way to just buy 2 top rollers. Also would the 10-058 even work for this door?

Need to order these rollers for my shower door both top and bottom parts please advise