Sandvik Coromant Jobber Length Drill Bit, High Performance High Penetration, Series: CoroDrill 860, Imperial, 0.421 in Drill - Decimal Inch, 4.646 in Overall Length, 5XD Cutting Depth, 2 Flutes, Spiral Flute, 2.795 in Flute Length, 0.472 in Shank, Cylindrical Shank, 147 deg Point, Split Point, Right Hand Cutting Direction, Solid Carbide Cutting Edge, Yes Through Coolant, Solid Carbide, TiAlN, Applicable Materials: Unalloyed Steel, Low Carbon Steel, Low/High Alloy Steel and Steel castings