This is an arrowhead.
It is from Shuneh Fort, Abydos. Different shapes of arrowhead were made depending on the intended target. Barbed heads ensured that the arrow wouldn’t fall out of the victim’s body, wide heads were designed to cut through flesh, and narrow heads were most effective for penetrating clothing and armour. This is an arrowhead. It is made from a copper alloy. It is between about 2500 and 3200 years old, dating to the 20th to 26th Dynasty (1186-525 BCE) in the New Kingdom, Third Intermediate Period or Late Period.