Guhring Micro Precision Drill, Type N, Series: 3899, Imperial, #61 Drill - Wire, 0.039 in Drill - Decimal Inch, 38 mm Overall Length, 5xD Cutting Depth, 2 Flutes, Spiral Flute, 10 mm Flute Length, 3 mm Dia Shank, Straight Shank, 140 deg Point, Facet Point, Right Hand Cutting Direction, Solid Carbide Cutting Edge, Solid Carbide, TiAlN Coated, Applicable Materials: Steel, Gray Cast Iron, Malleable Iron and Spheroidal Iron