Tire Iron (Fallout 3)

This very common weapon is often used by Raiders, and can also be found in Metro Stations and Raider Camps. It isn't very strong compared to other melee weapons such as Sledgehammers, but keeping a melee weapon in your inventory is advisable if you tend to run out of ammo for your ranged weapons. It is repaired with other tire irons, and can be bought at several shops throughout the Wastelands.

There is also a unique version of this weapon called the Highwayman's Friend.