Guhring Straight Flute Drill, Type RT 150 GG, Series: 768, Metric Drill Diameter Measurement System, 4.1 mm Drill Size - Metric, 0.1614 in Drill Size - Decimal Inch, 74 mm Overall Length, 23.85 mm Cutting Depth, 2 Flutes, Straight Flute, 30 mm Flute Length, 6 mm Shank, Straight Shank, 120 deg Point, Cone Relief Point, Right Hand Cutting Direction, Carbide Cutting Edge, Applicable Materials: Aluminum, Other Non-ferrous Metals, Gray Cast Iron, Malleable and Spheroidal Iron, Through Coolant (Yes/No): Yes, Carbide, Bright