I have 8 of these. Again, these were fro my rozenblitz opt.
I have not tested them, but bought them working from ebay.
I have a 9th one that I will throw in, it is missing the little top metal piece, but the wire is there.
If I find any others while searching today, you get them thrown in for free. LOL
Another super good deal $50 shipped free in the US.
First IM gets them.