I'm replacing a wiper blade. Two things that are not specified, other than left vs. right, is; (1) actual length, (2) Drivers side vs. passenger side. I had to do an internet search to find out if "left" was from the drivers view or "left" was me facing the vehicle. Being that one is longer than the other, the actual length would had also been a deciding factor as to which one I needed. Other than that, ordering process was a breeze.