Seco Short Length Drill Bit, Universal, Series: SD1103, Imperial Drill Diameter Measurement System, 1/4 in Drill Size - Fraction, 6.35 mm Drill Size - Metric, 0.25 in Drill Size - Decimal Inch, 3.11 in Overall Length, 3xD Cutting Depth, 2 Flutes, Spiral Flute, 1.339 in Flute Length, 0.315 in Dia x 1.417 in L Shank, Cylindrical Shank, 140 deg Point, Self-Centering Point, Right Hand Cutting Direction, Solid Carbide Cutting Edge, Solid Carbide, TiAlN, Applicable Materials: Cast Iron, Hard Materials, Steel and Stainless Steel