Stanley Black and Decker SortMaster Organizer with special lid structure and upper ribs interlocking with inner dividers, keeps small parts in place and prevents movement from one compartment to another. · · · High customization, 1024 configurations for each need · · Removable dividers allows combination of tools and small parts storage · · Top lid lock, keep contents secure inside · · Unique angled corners accommodate angled tools such as hammers