surely you should know the difference between the two, you can count to five, you know what a lug nut is, you should know how to use Google and have reasonable reasoning skills to do a search between the two. Maybe you can spot the difference than just 5 lug nuts. By the way that is a conical shaped piece in the center that helps the pit gun socket find the nut on the wheel.Would you explain how wheels like these hamper pit stops? I'm not into wheels at all and have never been on a pit crew or used an air gun. I see the same five nuts as before.