Your attacks are capable of penetrating the defenses of some creatures.
Benefit: Your attacks made with weapons selected with Weapon Focus ignore up to 5 points of damage reduction. This feat does not apply to damage reduction without a type (such as DR 10/—).
Pathfinder RPG Core Rulebook. Copyright 2009, Paizo Publishing, LLC; Author: Jason Bulmahn, based on material by Jonathan Tweet, Monte Cook, and Skip Williams.