You can get the complete rundown on the Hydro Copper 16 waterblock here.
From the EVGA Engineering and Development labs, the EVGA Hydro Copper Waterblock Series was born. EVGA continues to intelligently innovate with the introduction of the next legend within the Hydro Copper Waterblock series: The EVGA Hydro Copper 16 Waterblock, for the GTX 280 and GTX 260 graphics cards.
Featuring a sleek-modern look and a full copper design, EVGA continues to incorporate only the best attributes that make up the Hydro Copper Waterblock Series. An extreme high flow path design with a unique, integrated pressure point allows the Hydro Copper 16 Waterblock to keep your GTX 280 or GTX 260 as cool as can be while under even the heaviest of graphical loads.
EVGA also have quite the selection when it comes to varying models of GTX 260 and 280 graphics cards; one of which comes shipped with the inclusion of the aforementioned waterblock; dubbed the EVGA GeForce GTX 280 HC.
You can see all models listed here folks.