ah yes, i was under the assumption that it would have the two angled 3/8ths push fits top, rather than the double barbed method.
"Extreme performance MCW5000™ release 2 series water-bocks with patent pending Diamond-Pin Matrix© technology"; must be the release 1?
"This strange design requires a high flow rate, otherwise the pressure will drop inside the waterblock and stop the coolant flowing out to the reservoir"
That was one of my favourite parts too