Dormer Dormer Reduced Parallel Shank Drill, General Purpose Jobber Length Type N, Series: Tigertec Silver, 18 mm Drill Size - Metric, 0.7087 in Drill Size - Decimal Inch, 157 mm Overall Length, 4XD Cutting Depth, 2 Flutes, Standard Spiral Flute, 84 mm Flute Length, 1/2 in Shank, Reduced Shank, 118 deg Point, Conventional Point, Right Hand Cutting, HSS Cutting Edge, HSS, Steam/Black Oxide, Applicable Materials: Magnetic Soft Steel, Alloy Steel, Lamellar Graphite, Aluminum, Magnesium, Unalloyed and Copper