Seco Extension Length Drill Bit, Metric Universal, Series: SD1112A, 17 mm Drill Size - Metric, 0.669 in Drill Size - Decimal Inch, 285 mm Overall Length, 12xD Cutting Depth, 2 Flutes, Spiral Flute, 234 mm Flute Length, 18 mm Dia x 48 mm L Shank, Cylindrical Shank, 140 deg Point, Self-Centering Point, Right Hand Cutting Direction, Solid Carbide Cutting Edge, Solid Carbide, TiAlN, Applicable Materials: Cast Iron, Hard Materials, Non-Ferrous Metals, Steel and Stainless Steel, Specifications Met: DIN 6537A, Yes Through Coolant (Yes/No)