SGS High Performance Drill, Internal Coolant Tapered, Series: 140, 1/4 in Drill Size - Fraction, 0.25 in Drill Size - Decimal Inch, 4-7/16 in Overall Length, 8XD Cutting Depth, 2 Flutes, Spiral Flute, 3 in Flute Length, 5/16 in Shank, Straight Shank, 140 deg Point, Standard Point, Right Hand Cutting, Micro Grain Solid Carbide Cutting Edge, Micro Grain Solid Carbide, AlTiN Coated, Applicable Materials: Cast Iron, Non-Ferrous Metal Materials, Plastic and Other Tough-to-Machine Materials