Double javelin (4e Equipment)
From D&D Wiki
Superior Melee Weapons
|Heavy thrown, Reach
|- Secondary end
the double javelin is a spear weapon, consisting of a double-edged tips on both ends of a pole.
As a double weapon, wielding a double javelin is like wielding a weapon in each hand. You can use either end of the double javelin to deliver an attack unless a power specifies a main or off-hand weapon attack. An enchanted double javelin receives an enhancement bonus on both ends, but weapon properties or powers conferred by the enchantment affect only the primary end of the weapon.
- Heavy thrown
throwing from your hand make a basic ranged attack using your strength modifier for attack and damage rolls.
you can attack enemies that are 2 squares away from you as well as adjacent enemies, with no attack penalty, you can still flank and make opportunity attacks only against adjacent enemies.
The double Glaive secondary (off-hand) end is light enough that you can hold it and attack effectively with the primary end in your main hand. You can't attack with both ends in the same turn, unless you have a power that lets you do so, but you can attack with either end.