These are steel-framed cabinets with sturdy plastic drawers (no rusting) for storing parts. The cabinets are painted dark gray and the drawers are gray plastic with clear windows and a slot for labels. Lots of extra dividers are included for dividing up the drawers.
I have one with 16 drawers and one with 20 drawers—the cabinets are the same size and they are designed to stack securely. I took photos of the 16-drawer one, but the 20-drawer one looks similar (it is actually in better shape; this one has a scratch on the top as the photos show), just five slightly smaller drawers per row instead of four.
These sell new for between $215 and $240 (screen grab of the Grainger page for these is included in the photos). I'm asking $140 for one. Your choice which one, as long as they're both available, or take both for $270 (I know that's not much of a volume discount, but I'd just as soon keep one of them, and they're cheap to being with).