DIYhz2Pcs Water Cooling Block Aluminum for Liquid Water Cooler Heat Sink System Graphics Radiator Heatsink Endothermic Head PC Computer CPU (40mm x 40mm x 12mm)

Haven’t had any leaks. I took an x-ray because i wanted to drill and tap two holes to mount a couple of MOFSETs and I didn’t wanna accidentally drill into one of the coolant channels. It turned out the coolant channels inside the block were too narrow for screw size I wanted to use. I used super sticky thermocouple tape instead. I could probably still drill, and when I hit the cooling channel I could immediately stop drilling, tap the hole, and use a very short screw so that the screw doesn’t block the cooling channel, then add some locktite or rtv to the threads, but I did the lazy thing and used the thermal tape, lol

Generic DIY item - not much to comment. Quality fits purpose.

The parcel took long time to deliver. I'm happy with the quality, but the parcel only contains 1 cooling block instead of 2.

Purchased two of the sets. We use them connected to our chiller to a cooling die for parts coming from an injection molding machine. They are solid, no leaks and very uniform. We used hose straps because we are pushing pressurized chilled water but held up good. Three of them are pinched between two ¾” aluminum plates, they keep the entire fixture at the chiller temp even after hours of use.

got them,nothing else to describe them. no leaks.