About This Spot the Difference: Keep your socket drawer tidy and easy to access; Color coded socket trays make it that easy to tell your metric sockets from your SAE sockets at a glance Mechanical Magnetism: The base of each socket tray contains a powerful magnet that keeps your tools in place; Carry this mobile socket organizer without worrying about dropping tools Smooth Operator: Rubberized backing that will not mar or scratch surfaces lines the base of these socket trays; Attach to any ferrous metal surface to organize as you please From Small to Tall: This set includes trays for SAE and metric sockets in 1/4, 3/8, and 1/2 inch drive sizes; Socket trays are designed to keep deep and shallow sockets together in 2 rows Keep Things Clear: Each tool box socket organizer has socket sizes clearly printed along the length of the tray for easy viewing and even easier identification of the socket you need