Flint knife (tecpatl):

The tecpatl, or flint knife, was an essential tool for everyday life in Aztec culture. It was used to cut meat, prepare skins, carve wood, and perform religious rituals.

The flint knife was also a symbol of power and strength. Aztec warriors used flint knives in battles and priests used them to perform sacrifices.

In Aztec mythology, Tezcatlipoca was also known as the one who has the flint knife, which represented his power to cut and transform reality.