Four Flat Sides feature wrench-ready design;Four Flat Sides on socket deter rolling;90 tooth design with 4 degrees of arc swing for tight work spaces;Sockets with stamped sizes;Slim Profile Ratchet;Removable inner tray specifically designed for steel storage;Lifetime Guarentee;Packout Organizer has an Impact Resisitant Body;Packout Organizer has a IP65 Rated Protection;Packout organizer has clear top for easy identification of contents;Packout organizer has heavy-duty latches;Packout organizer has reinforced hinge