The two GTX 680's are connected via a 2-slot bridge connector. As the pictures show, one of the cards is a gigabyte reference model, while the other is an EVGA model with a slight OC and comes with a backplate.
Not included: SLI bridge
Included: 2x G1/4 adapter for 1/2" ID hoses SHIPPING by registered mail
I'd prefer to sell them together, but will sell by parts if there are no other takers.
Gigabyte GTX 680 (no backplate) with waterblock ($345) or without ($300)
EVGA GTX 680 (w/ backplate) with waterblock ($355) or without ($310)
XSPC waterblocks $50/each If you buy the cards without the waterblocks, I will include the reference coolers without TIM or thermal adhesive.