Inaccurate?

Lightning Mace

( Complete Warrior, p. 113)

[Style]

You are a master of fighting with two maces at the same time, and have learned to strike your foes with lightning speed.

Prerequisite

Combat Reflexes (PH) , Two-Weapon Fighting (PH) , Weapon Focus (PH) (light mace) ,

Benefit

Whenever you roll a threat on an attack roll while using a light mace in each hand, you gain an additional attack at the same attack bonus.