Sonic S11 Toolboxes maximize strength and rigidity by stamping the whole box from one piece of steel, then the sides are folded up and welded. This efficient design makes it stronger and the process is more efficient. This S11 toolbox includes 8 drawers that all span 29" wide and 17" deep. Seven drawers are shallow (2.4" deep) with one wide drawer on the bottom (5.4" deep), and all include roller-ball-bearing slides. This S11 has more than 11,000 cubic inches of storage.