The TOUGHSYSTEM 2.0 Mobile Tool Box has patented auto-connect side latches, allowing for 1 hand operation. It also has 2-piece metal wire front latches for added durability when securing tools inside of the box. This tool box offers 20% more tool storage when used with DWST08165 and DWST08300 as part of a tower. It is IP65 rated for dust and water resistance and has a 250 lbs. load capacity. The tool box has a removable inner tray for optimal organization. The wheel of this toolbox is 8 in. to navigate through worksite terrain. The TOUGHSYSTEM 2.0 Mobile Tool Box is compatible with all TOUGHSYSTEM products.