JBG1024 Features: * Highest quality high speed steel made from specially hardened chrome molybdenum steel that will not bend or loose its shape * Use on ferrous and non-ferrous metals such as mild steel, sheet metal, iron castings, brass, copper, aluminum, wood, and PVC * Carded Includes: * 13 piece set includes one each 1/16"", 5/64"", 3/32"", 7/64"", 1/8"", 9/64"", 5/32"", 11/64"", 3/16"", 13/64"", 7/32"", 15/64"", and 1/4"" drill bits in a convenient plastic storage case