A short stabbing knife which, in ancient and medieval times, was not very different from a short sword. From about 1300 the European dagger was differentiated from the sword. In earliest antiquity, it was made of flint, copper, bronze, iron, or bone. It is difficult to distinguish it from an inoffensive knife blade. Prehistoric daggers were made in flint by the Beaker Folk in the Neolithic-Early Bronze Age, about 1900 BC. Bronze dagger, tanged for wooden hilt, were imported by Beaker Folk from western Europe between 1900-500 BC. The fully developed style of the Iron Age came to be in the 1st century BC. In copper it was ancestral to the rapier, sword, spear, and halberd.