I saw these in the YouTube Video Below.
https://www.youtube.com/watch?v=BiuepAGF9Zw
They are Rigid Sheets that Hold PSA Graded Cards in a Binder (4 per Sheet).
I always Wondered Why I never Saw these Before.
I have Similar Ones for my PCGS Graded Coins.
I checked eBay, Amazon, and Googled Them.
Nobody has them or they are Marked Sold Out.
I Read they Stopped Making these Years Ago (Why? - They are Awesome).
I also read that Lighthouse and BCW also made them but no longer make the either.
Does anybody know of a Website or Place that Actually Has these In Stock so I can buy some?