identified as 15

The shaft has a hexagonal anti-roll feature that prevents the tool from rolling away when set down

Dokumentation: Producentens datablad

Key retaining 6-pin tumbler cylinder

as described by the manufacturer:

Lagerkasse ESD 186x500x182mm MIL58397101402 identified as 15. Our high quality, durable stacking bins have been designed for daily use in stores, production facilities and warehouses. Bins have been designed to fit all standard metric shelves, paternoster and industrial workstations. Bins of the same width stack securely, even if they are of different depths. Straight sides ensure an efficient use of space. The design, with a half open front, allows excellent visibility and easy access to the bin's contents,