ToughSystem 2.0 DS450 tool box. The tool box is 7 percent more internal volume and fully backwards compatible with ToughSystem 1.0. Tool box has wider and stronger handles. New auto stacking latches with easy to close metal front latches. Metal reinforced padlock eye. Visible IP65 waterseal. Half module compatibility. Detachable handle with 8 in. PU durable wheels. It is Dewalt tracker ready.