Hammer Fist
( Dragon Compendium)[Fighter Bonus Feat, General]
You are trained in an unarmed fighting style that emphasizes a two-handed strike.
Prerequisite
Improved Unarmed Strike (PH) , STR 13,
Benefit
You may make a single unarmed attack with both hands to add 1-1/2 your Strength bonus on the damage roll. This extra damage does not apply if you make a flurry of blows attack or if you are holding anything in either hand.
Special
A fighter may select Hammer Fist as one of his fighter bonus feats.