These swords are a bit over 3 feet long, very slightly curved, and sharp only along the outer edge.

Benefit: A dueling sword may be used as a Martial Weapon (in which case it functions as a longsword), but if you have the feat Exotic Weapon Proficiency (dueling sword), you can use the Weapon Finesse feat to apply your Dexterity modifier instead of your Strength modifier on attack rolls with a dueling sword sized for you, even though it isn't a light weapon. You can also wield a dueling sword in two hands in order to apply 1-1/2 times your Strength bonus to damage.