An Anger mace is an item that can be used only during A Soul's Banequest to kill the Angry giant rat. Its maximum hit is 2000, but the player doesn't receive any experience when using it. It is found in the rage room's weapon rack. As with all Anger weapons, it can't be taken out of the dungeon without using a glitch and only one Anger weapon is obtainable at a time.
Zamorakian Spiritual Warriors in the God Wars Dungeon also wield a weapon that is identical to the Anger mace.