This property may only be added to a Two-Handed Melee weapon.

The weapon has an extended striking range—such as a spear, polearm, or long-handled blade. When making a Melee attack with a Reach weapon, you may target an opponent up to 2 meters away instead of the usual 1 meter.

A Reach weapon is more difficult to use in close quarters. When you attack a foe in an adjacent square, you suffer slight on the attack roll.