Ordered these as-is not realize they have a clever folding method allowing any of these to be converted into a right tab, middle tab or left tab folder

Each folder can be folded differently to provide either a left, center or right tab.

The center tabs are not only much narrower than the left or right tabs, but are too narrow to accept a regular file folder label.

Each folder can have the left, center or right tab

Each folder can be either right, left or center tab, you decide.