I say tools but any sort of storage really: parts, fasteners, electrical components and collectors or any combination of the above. All could find a home in this professional trail box with its heavy-duty wheels and retractable handle.
Sealey suggest that it’s a storage box for small parts in 25 storage compartments, a second for larger parts in 13 storage compartments, a large parts storage box, small tool box and large tool box, all of which slide out of the composite frame independently. Usefully, all are easily secured by composite clasps plus lift and lock latches built into the frame, and padlocks (not supplied).
It looks like a perfect opportunity to transfer all of the crap worth keeping from ancient margarine tubs in your workshop and put it in one place, before hiring a skip to take the rest away.