Skeeeets wrote:

Yeeaaappppp.... It sratched easy with a push pin 📌

So I guess it's just a fidget knife.... Serrations it is.

Color looks high carbon steelish in that video but without hardness testing who can really say!
Concealable but poor for grasping IMHO. Worst case having to stab will likely have the hand grasping the knife sliding right up to the blade. And before that you'd have to open the thing first.