FOUR FLAT Sides deter rolling;FOUR FLAT Sides feature wrench-ready design;90 tooth design with 4 degrees of arc swing for tight work spaces;Stamped socket sizes;Slim profile ratchet with flush directional lever;Removable inner tray specifically designed for steel storage;Storage trays Fit Only Milwaukee FOUR FLAT Sides Sockets;Lifetime Guarantee;Fully compatible with Milwaukee Packout Modular Storage System;Packout Organizer has an Impact Resisitant Body;Packout Organizer has a IP65 Rated Protection;Packout organizer has reinforced hinge;Packout organizer has heavy-duty latches;Packout organizer has clear top for easy identification of contents