The Pro series is the new addition to Aqua-Computers range of radiators. They have parallel flat-pipes for a low flow resistance, black coating and G1/4" windings.
Unlike the evo series the new radiators have M3 windings on the top and bottom and the lamellae pipes are made of copper while the casing is made of brass. The Pro series is also very thin and compact which ideal for fitting cases with not much room to work with.