What is the Thule Pro Bar for T Slot Tonneau Covers?

Does anyone know if the Elevate T Slot rail would work with the Overhaul? It looks like it might and if it does, it would work with a nice

These extrusions are cut to size and tapped both ends for the Prinsu-style roof rack For compatible t-nuts, please click here for economy or standard

top slot productthule-probar-rack-for-tonneau Great for Tonneau Covers w T

t slot extrusion Designed to be compatible with T-slot rails allowing you to bolt directly on your cover Covers with T-slot rails compatible with TUWA Pro T-slot bases: