Jonas,
Dayam! Man, those sure are nice, there are like four or five different little spike thangs, but...what a price tag. They are very sneaky, OSS/SOE-types of devices...more deadly in CQC than alot of people understand either...(fact).
I have to get Bill Siegle to work again, he made me a beautiful copy of an OSS/SOE Sleeve Dagger, and it is much better than the originals were. In other words, it is actually capable of being sharpened to a razor sharp edge instead of, "just sharp."
I had him chisel grind it so it will lie flat. Better than the originals in that way as well.
It is in the Link in the Signature Line, have you seen it?