The key features are a wide, deep spine with a straight up-sloping tip. The main blade is a separate grind creating  a secondary point, like an upside down clip point, where it transitions between the two. The deep spine has lots of metal near the point and tip making them very strong. They are popular with military and rescue personnel because they are very robust with the ability to penetrate sheet metal. Tantos are, therefore, our pick for optimal EDC knife.