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What Bottom Bracket is this?

edited May 2013 in MTB workshop & tech
I am making a return to cycling after around 7 years off. I have bought a Giant XTC Advanced SL Carbon Fibre frame...unsure of what year it is.

Anyway it has arrived today and it has some bottom bracket that I havent seen before. Im not sure what is it or how it works.

Can anyone help me out and identify what bottom bracket I require, or what this is that is in my frame?


On the other side is a threaded bit right in the center, im not sure if one side has this like bolt which threads to the other sides cup and tightens together?


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