small stackableheaders

I saw the .100 stackable headers you guys have for the arduino, my question is do you know any source for smaller ones like this, stackable headers is the .050" (1.27mm) size pitch? for a small project I’m working on.

http://www.samtec.com/connectors/micro- … trips.aspx

I was looking for the longtail stackable ones like [this. but in .050 size. all the ones I can find are the standard tail length that can’t stack](Arduino Stackable Header - 10 Pin - PRT-11376 - SparkFun Electronics)