US Military Water Canisters (MWC) are manufactured by the Canadian company Scepter. You may find there more info about canister as well as some more technical information.
Such MWCs are used not only by the US Military but are exported worldwide, sometimes with different inscriptions. While both fuel and water looks almost identical, main feature is different handle. Each MWC has a uniform, integrated single handle that, in the dark, prevents mistaking it for the three handled MFC.
Set contains 4 resin elements.