ABC
Good for extinguishing wood and paper fires (ordinary combustibles).

Co2
Good for electrical and equipment fires.  Uses a gas that quickly evaporates and leaves no residue.

Halatron
Especially good for computers, aircraft instruments or other sensitive control panels.  Leaves no residue and is not electrically conductive.

Water type
This extinguisher is good for putting out smoldering fires at peanut and cotton gins, on farm combines, or anywhere there are materials stored that the source of the fire can’t be reached.  These fires can easily reignite.