Scorpion tail

A scorpion tail is a miscellaneous item in Fallout, Fallout 2 and Fallout: Brotherhood of Steel.

Background
The tail can be taken from dead radscorpions and sold almost anywhere, and is prized for the poison sac it contains, which is used to make a poison antitode.

Fallout
Usually obtained from recently-deceased radscorpions, though a few can be found elsewhere. Myron uses them to make the antidote, as does Razlo in Shady Sands.

Fallout 2
One can be used to poison the Wright's still. Over time, the citizens of New Reno will start dying. This doesn't effect any family members, but it will kill Father Tully. The intelligent radscorpion's tail can be removed while still alive without consequence as long as the player isn't caught.

Fallout: Brotherhood of Steel

 * Armpit needs them for his liquor recipe.