OSG Drill Bit, Jobber Length Standard, Series: 220D, Imperial, 1/16 in Drill - Fraction, 1.59 mm Drill - Metric, 0.0625 in Drill - Decimal Inch, 38.1 mm Overall Length, 19.1 mm Cutting Depth, 2 Flutes, Spiral Flute, 19.1 mm Flute Length, 1/16 in Dia Shank, Straight Shank, 118 deg Point, 4-Facet Point, Right Hand Cutting, Carbide Cutting Edge, Through Coolant (Yes/No): No, Carbide, Uncoated, Applicable Materials: Alloy Steel, Aluminum, Cast Iron, Low/Medium/High Carbon Steel, Hardened Steel and Stainless Steel