OSG Drill Bit, Jobber Length Standard, Series: 220D, Imperial, 1/8 in Drill - Fraction, 3.18 mm Drill - Metric, 0.125 in Drill - Decimal Inch, 57.2 mm Overall Length, 31.8 mm Cutting Depth, 2 Flutes, Spiral Flute, 31.8 mm Flute Length, 1/8 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