The Last Stand: Union CityEdit
This is not wool at all!
The Last Stand: Dead ZoneEdit
It's not wool at all.
Regular wool made from animal fibers take the backstage in the light of their artificial counterpart, steel wool. Thin, flexible steel threads are bundled together to form an abrasive, often used for sanding and cleaning. Steel wool can also be used for other purposes, such as plugging mouse holes and starting fires.
Sold in rolls at hardware stores.