Question for the pro's... Help! PAPS INC V2

[audiopistol]

I'm looking for a certain part but I have no idea where to find it or what I'm even looking for... can anyone tell what this is? It looks like a copper washer to me but I'm not sure. The part I need is the small (dime sized) round copper plate that sits above the clad board and has the copper wire (18 gauge?) soldered into it.

 

[LowCarProblems]

Off topic, but how do you like your paps v2? Thinking about this or a wicked wood mod... I'll be getting the v3 if I get the paps inc...
Durability, do you sub ohm, quality, is it super glued, etx?