This picture shows a typical example of a percussion flaked knife from the Predynastic Period. It's made in the "classic" style with a long curved blade edge and a straight back edge. This knife also has a handle that is actually more of a finger notch. Handle designs vary but on these smaller more common knives they do seem to be functional rather than just decorative like those on large tomb swords. This knife is made from a gray colored chert of good quality and it measures 5 5/8 inches (14.3 cm) long and 2 inches (5.1 cm) wide.