Guhring Taper Shank Drill, Type N Deep Hole General Purpose, Series: 217, Imperial Drill Diameter Measurement System, 3/16 in Drill Size - Fraction, 0.1874 in Drill Size - Decimal Inch, 132 mm Overall Length, 79.86 mm Cutting Depth, 2 Flutes, Spiral Flute, 87 mm Flute Length, 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