SOLVED: Dual nub: Asembly of nub: Question

[T4b]

I bought this nub: http://www.dealextreme.com/details.dx/sku.24891
Then I wanted to use this tutorial to do the mod: https://www.acidmods.com/forum/index.php/topic,27306.0.html

After I disassembled the nub I noticed, that it is different from the one in this tutorial.

I attached an image of the parts.

Can I somehow use it anyway? If not, where do I get one which can be used as a dual nub?

Edit: Okay, I'm a complete idiot, I didn't disassemble it completly.