The ToolBox Widget Modular Socket Organizers are fully modular and expandable. Simply connect, add, or remove as many of the modular socket organizers as desired. Users can connect the 1/4" drive socket widgets to the 3/8" and 1/2" organizers in one run. The organizer holds both small and large sockets, crows feet, torque adapters, and more. It holds the item by the drive size, not the socket size. If an item is missing, the user will see orange to easily identify an item is not there. With strong magnets in the base, the Modular Socket Organizer stays in place in a toolbox drawer.