If you're joining us from Ranger5G, then you may already have an account here! As long as you were registered on Ranger5G as of March 27, 2020 or earlier, then you can simply login here with the same username and password.
These are what I used. Search Amazon with this description and they should be first in the result.
GCi STRONGER BY DESIGN G-16 Pinch Clamps for Inside Mount Tonneau Covers (6 Pack).
I have the Bison Flip Back Hard Tri-fold Tonneau Cover. It’s good for the price. It does hang over a bit near the cab, but that is not an issue. The clamps they provided did not work so I found some on Amazon. I did a Google review of it.
I have one. A couple of small issues. I had to get different clamps as the supplied ones would not stay in place. Also the ends of the rails were poorly finished - fixed with a file. It has the option of folding up against the back glass if you have something large in the bed.