2mm thick Polypropylene makes the Stanley 3-In-1 Tool Organiser tough and durable. When closed the case has a robust structure that provides good security whilst transporting. The case has a 15kg weight limit. Other features include movable dividers that provide specific configuration for smaller parts and or tools and power tools, and a central rigid tote that is perfect for hand tools. Each side is fitted with a polypropylene lid to keep everything in its place. Width 426mm(17in), depth 234mm(9in), height 312mm(12.1/4in).