Unmarked self-defense knife with sheath that can be tightened at any angle. I carried it for a couple of weeks and used it quite a bit. I cut a couple of water hoses, some leather, and a few other things. The edge has held up well. I don't know what kind of steel it is, but, I'm pretty sure that it's not 3cr13(sorry steel). I've never sharpened it. Thanks for reading.