Spetum (4e Equipment)
From D&D Wiki
Military Melee Weapons
The spetum is a polearm, with two singled-edged prongs at the base of a spear-head. Like it's more developed cousin, the ranseur, it can be used to catch a foe's shield or weapon.
You can attack enemies that are 2 squares away from you as well as adjacent enemies, with no attack penalty. You can still make opportunity attacks only against adjacent enemies. Likewise, you can flank only an adjacent enemy.
The spetum can be used to make a disarm attack.