STEELMAN 55154 1/4-Inch Drive 28-Piece Metric Socket Rail Includes 1/4-inch drive 28-piece metric socket rail Socket rail designed to hold and organize your sockets eliminating toolbox clutter Durable ABS plastic construction Designed for use with: 4mm, 4.5mm, 5mm, 5.5mm, and 6mm through 15mm sized sockets Features 28 posts with clearly labeled size callouts