Closet roller wheel help

Hello,

I've looked through your parts for closet mirror wheels, and I haven't been able to find an exact match. The part that I need has 2 tabs on the top that insert into the bottom of the metal frame of the mirror and then the part is pulled tight by an external screw. The Mirrors are approximately 6 feet wide by 6 feet tall. Any help and or advice you can give is very appreciated.

Thank you,
Justin