Inch and Metric Spring Steel Sizes - 300 Pieces. We stock a wide variety of Automotive & Specialty Assortments in both inch & metric. All KL Jack Drawer Assortments are packaged in Large Scoop Latching Metal Boxes with a Contents Label and easy to read Drawer ID Label. Assortment Drawer Outside Dimensions in Inches: 18" wide x 12" deep x 3" high.