Healing Potion Injector

Healing Potion Injector is a potion item that restores 1,500 to 2,500 health (1,875 to 3,125 for engineers), and created in stacks of 20.

Source
This item is crafted with Engineering (330); taught by Schematic: Healing Potion Injector.

Disambiguation
There are two items with the name Healing Potion Injector, one with one charge, and one with twenty charges. Blizzard lists both in The Armory. The one with 20 charges lists no current source. Those should disappear from WoW as they are used up.

The flavor text on the old style Healing Potion Injector tooltip now reads:


 * gold

If you have an old style Healing Potion Injector or buy one from the auction house, be aware that they do not stack, but have 20 charges, also be aware that the sell price for a fully charged one is.