The VGA cooler itself (in this case the Accelero X2) is the heatsink (HS) and fan.
A heatsink is a metal block that conducts heat away from the the heat source, and a fan is usually attached to it to cool it down.
The Accelero X2 is a great VGA cooler. It is extremely quiet compared to the stock cooler, and it cools better.
EDIT: After reading nukemaster's post, I think he understood your question better than I did.