Practical Classics Product Test Best Buy...."a versatile and high quality product" "The Franklin CD19 is easily the best buy in this group"''..the CD19 bits seem to cut through steel quicker and more accurately, and stay perfectly where they should even without a quide dot to follow..''CD19 manufactured to DIN338using 4.5-5.0% cobalt M35 steelProduct Number:CD19HSSCo COBALT DRILL SET1.0 - 10.0mm X 0.5mm 19 piece set in index case1.0 1.5 2.0 2.5 3.0 3.5 4.04.5 5.0 5.5 6.0 6.5 7.0 7.58.0 8.5 9.0 9.5 10.0 mm