Innovative locking latches and stacking option allows secured stacking of several organizers to save space and maintain organization. Removable dividers provide high customization for small parts bs apecial lid structure- upper lid interlocking with dividers prevents movement of small parts from one compartment to another. The 4 individual stacking boxes measure about 11 ½” wide x 8 ½” deep and 10 ½” tall. Each individual box measure about 11 ½” wide x 8 ½” deep and 2 ¾” deep. Comes complete with all interior dividers and one replacement handle per unit.