Allows you to equip one-hand and off-hand weapons in your off-hand. Increases the damage of your off-hand attacks by an additional 25%.
Patch changes
Patch 4.3.0 (29-Nov-2011): Dual Wield Specialization no longer increases all Physical damage by 5%. It continues to increase off-hand attack damage by 25%.
Patch 4.2.0 (28-Jun-2011): Dual Wield Specialization weapon damage increase has been lowered to 5%, down from 10%.
/Patch 4.0.1 (12-Oct-2010): Now only available to Fury specialization.