If yoou're thinking about the vents on the cented sides of each headlight:
Thats and eyebrow that is together with the vent so when you put it on you have to replace the orginal vent........ if you want it cheap then just cut out the center piece of the vent.....thats what I did on my car...
I tried to buy these eyebrows but the only thing that I found was the Wings west eyebrow, which looks like shi* and does not come with the vent......