Sizes from 4mm to 8mm and lengths from 10mm to 50mm in length. Includes Hex Keys - 1154 Pieces. We stock a wide variety of Fastener Assortments in both inch & metric, numerous finishes and fastener types. 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.