Dormer Reduced Parallel Shank Drill, General Purpose Jobber Length Type N, Series: A170, 15.5 mm Drill - Metric, 0.6102 in Drill - Decimal Inch, 156 mm Overall Length, 4XD Cutting Depth, 2 Flutes, Standard Spiral Flute, 83 mm Flute Length, 1/2 in Shank, Reduced Shank, 118 deg Point, Conventional Point, Right Hand Cutting Direction, HSS Cutting Edge, HSS, Steam/Black Oxide, Applicable Materials: Magnetic Soft Steel, Alloy Steel, Lamellar Graphite, Aluminum, Magnesium, Unalloyed and Copper