Dormer Taper Shank Drill Bit, General Purpose Jobber Length, Series: A530, Metric/Imperial, 17.5 mm Drill - Metric, 0.689 in Drill - Decimal Inch, 228 mm Overall Length, 4XD Cutting Depth, 2 Flutes, Spiral Flute, 130 mm Flute Length, #2 Morse Taper Shank Taper Designation, 118 deg Point, Thinned Web Point, Right Hand Cutting Direction, HSS Cutting Edge, No Through Coolant, HSS, TiN, Applicable Materials: Steel, Stainless Steel, Cast Iron, Titanium, Nickel, Copper, Aluminum Magnesium, Synthetic Materials, Hard Materials and Graphite