i don't receive the package but i got the refund. life is hard during this pandemic.
Cpt. Obvious postulates that it`s indeed a handful of perforated slot covers. By the way, they might get slightly bent in shipping, so make sure to bend them back into original shape so that they sit flush against the opening in the computer case and dont wobble around, as the only thing holding them in place is the screw, and that bulge in the middle. Mind the dust, too.