Hello.
My 2 heatsinks arrived well and safe, but they were not quite as I expected.
They are not flat on the surface that fits against the underside of the Seoul LED. They have ridges and a stud that has not been properly machined away. It is a problem since the heat transfer is suffering.
As I was in quite a bit of a hurry to finish a long awaited for gift I had to improvise and dremel away the stud on the one that had the best surface, with only a protruding stud. I had to isolate it with arctic alumina. That was not really my intention as I prefer to mix my own epoxy with the better arctic silver, thus requiring an anodized heatsink. But still, I have one unusable heatsink and I feel I did not get what I paid for.