What part is like a male header with long pins on both sides?
The part is available on Digikey with their part number PCC36SFAN-ND:  
Sullins Connector Solutions PCC36SFAN. A PDF drawing of the connector is available from Sullins.

It's just a single row male header.  What I've done when the lengths aren't quite right is just order it longer on one end, and then push the plastic bit so it shifts to the middle and leaves equal-length conductors on each side.