Guhring Jobber Length Drill, Type N General Purpose, Series: 205, Metric Drill Diameter Measurement System, 0.39 mm Drill Size - Metric, 0.0154 in Drill Size - Decimal Inch, 20 mm Overall Length, 4.415 mm Cutting Depth, 2 Flutes, Spiral Flute, 5 mm Flute Length, 0.39 mm Shank, Straight Shank, 118 deg Point, Cone Relief Point, Right Hand Cutting Direction, HSS Cutting Edge, Through Coolant (Yes/No): No, HSS, Steam Oxide, Applicable Materials: Steel, Gray Cast Iron, Malleable Iron, Spheroidal Iron, Aluminum and Other Non-Ferrous Metals