This is the kunai, used by ninja to dig or take nails out of the wall. As also a blunt weapon they'd use as a shield. Many different types of uses, just as a general tool. And in general this is what the kunai look like. Could be a little bit bigger, little bit smaller and sometimes it is was serrated and had a sharper edge. But in general it is a pretty heavy and blunt and even a blunt edge most of the time. So its just a small, small sample of the kunai.