The C42 Tool Trolley series can be purchased in two- or three-module units that snap together. The top box can be removed and carried as a self-contained tool box.
From Tech Shop
Beta Tools of Italy has introduced its C42 series, which can be purchased in a two-module unit called the C42S or three-module unit called the C42H.
This trolley features a metal panel construction, a telescopic handle, oversized 6.25-inch diameter casters and small bins built into the top for quick access to fasteners. The modules snap together and release by pulling the side handles up. The top box can be removed and carried as a self-contained tool box. The bottom modules are accessed by removing the module above it.
The sheet metal frame is painted before manufacturing, leaving no exposed steel, which would be vulnerable to rust.