Sandvik Coromant Screw Machine Drill, High Performance, Series: CoroDrill 860, Imperial, 1/4 in Drill - Fraction, 0.25 in Drill - Decimal Inch, 3.11 in Overall Length, 3XD Cutting Depth, 2 Flutes, SSK Flute, 1.339 in Flute Length, 0.315 in Shank, Cylindrical Shank, 147 deg Point, Split Point, Right Hand Cutting Direction, Solid Carbide Cutting Edge, Solid Carbide, PVD TiAlN Coated, Applicable Materials: Steel, Stainless Steel and Aluminum