Agreed. I just wanted confirmation on what actually came in my kit. Without a doubt I have non vented caps.
Just to clarify for those who may not know... do not confuse the bleeding hole with the vent hole in the upper side of the cap.

As for the email I received, he probably inverted the part numbers. An honest mistake.

Now that I built sets with both types of caps, I can say that vented ones seems really smooth compared to non-vented.
I will test them both tomorrow.