Klein Tools MODbox Medium Toolbox features side rails that connect attachments for more storage options and easy access to commonly used items. Metal reinforced handle pivots for a comfortable top carry when not connected to other MODbox component parts. Medium Toolbox is IP65 rated, 100-Pound (45.4 kg) capacity, and made with impact resistant polymers. Comes with a removable Tool Caddy. Easily connects with other MODbox components to make a custom mobile workstation.