Rapier

Cost: 20 gp
Weight: 2 lbs.
Damage: 1d4 (small), 1d6 (medium)
Critical: 18-20/x2
Range: —
Type: Piercing
Category: One-Handed Melee Weapons
Proficiency: Martial
Weapon Groups Light Blades
Special: —

You can use the Weapon Finesse feat to apply your Dexterity modifier instead of your Strength modifier to attack rolls with a rapier sized for you, even though it isn’t a light weapon. You can’t wield a rapier in two hands in order to apply 1-1/2 times your Strength modifier to its damage.