You can knock foes out cold with just about any blunt instrument.
You take no penalty on attack rolls for using a lethal bludgeoning weapon to deal nonlethal damage.
A rogue with this feat can use a lethal bludgeoning weapon to deal nonlethal damage with a sneak attack.
You take a –4 penalty on attack rolls when using a lethal weapon to deal nonlethal damage. You cannot use a lethal weapon to deal nonlethal damage in a sneak attack.
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SECTION 15