This storage unit has 512 possible configurations for storing items. Locking latches allow for stacking of units. The 90 degree angle can accommodate tools such as hammers. The special lid secures contents in proper container.Innovative benefits such as locking latches allows secured stacking and transport of up to 3 at once. Movable dividers provide high customization for small parts and larger hand tools; 512 configurations possible. Unique 90-degree angle in the main compartment design allows storage of hammers and angled tools or measure tapes comfortably with the small parts. Special lid structure ? upper lid interlocks with dividers to prevent movement of small parts from one compartment to another.