Berg Strip on Shields

What is the part number / name of the berg strips on the shields? the ones that seem to have a male below and female above or is it a great piece of soldering? if not where can i get some?

Cheers,
Prakash

like this?

They’re also here:

http://www.nkcelectronics.com/arduino-stackable-header-kit.html

http://ebnstore.net/index.php?page=shop.product_details&flypage=flypage.tpl&product_id=11&category_id=4&option=com_virtuemart&Itemid=1&vmcchk=1&Itemid=1

and probably in many more places. Just look for stackable headers.

Everything seems to be at 2$ for a board. Male headers cost around 0.12 cents for the entire board. female at 0.15 cents (indian prices) and 2$ is like 70-80% the cost of the Atmega168

I think the generic name for these (outside of the Arduino community) is wirewrap headers (correct me if I’m wrong), might help if searching other places like farnel and RS.