Nintōjō

The, also known as the Staff of Two Heads in the English version of the anime, was the weapon which Jaken wielded. It could produce long streams of flame, and generated large floods of water. It was given to Jaken when Sesshōmaru saved him and his imp tribe from being slaughtered.

Physical description
It looks like the name it was given. On half of the top of the staff, sat the head of an old man, and on the other, sat the head of a once-beautiful woman with silky black hair. The staff was taller than Jaken himself.

Powers & Abilities
The Nintōjō has few abilities. The old man head can spew an impressive amount of fire upon Jaken's command. When close to the grave of the Inu no Taishō, the old man's head laughs, but when at the wrong place, the woman's head shrieks.

After the location of Inu no Taishō's grave, Jaken retains the  Nintōjō, which can still spew fire from the old man's head.