As I understand the vocabulary, the Armor Tanto is a double-bevel knife. The primary bevel is easy enough to see in the picture above and the blade is trimmed further right at the cutting edge. If you click the pic, you can make out a thin silver edge where the second bevel is. I hope this helps!The tanto blade tip is sharpened on both sides. The rest of the blade is sharpened only on the bottom. I think what you are asking is if the knife has a chisel style edge or the traditional edge. A knife with a chisel edge is only sharpened from one side on angle forming a leaned over "L" shape (rough discription). A knife with a traditional sharpening is sharpened from both sides at the same angle forming a "V" shape. I am by no means an expert but the main differences I find in these two common knife edges is that the chisel edge sems to be the stronger, longer lasting edge but the chisel design does not follow a straight line when cutting by nature because of only having one side that is angled. The traditional seems a hair bit sharper but not much and is less strong but does follow a straighter line when cutting. I cant tell from the pictures I have seen but if I had to guess, I would guess that this knife probably has a chisel edge because many tanto blades carry a chiseled edge rather than a traditional edge be cause the main point of a tanto blade is maximum strength while still having a high degree of sharpness.