Warblade of the Hakkari (main hand)

Warblade of the Hakkari is the name of a main handed sword and its off-hand companion. The main hand increases attack power and crit rate. The two swords form the weapon set The Twin Blades of Hakkari.

Source
Warblade of the Hakkari drops off Hakkar in Zul'Gurub in Stranglethorn Vale.