GARR Jobber Length Drill Bit, Series: 1100, Imperial, W Drill - Letter, 0.386 in Drill - Decimal Inch, 4-1/2 in Overall Length, 5XD Cutting Depth, 3 Flutes, Spiral Flute, 2-7/8 in Flute Length, 0.386 in Shank, 150 deg Point, Self-Centering Point, Right Hand Cutting Direction, Submicron Grain Solid Carbide Cutting Edge, Submicron Grain Solid Carbide, Uncoated, Applicable Materials: Cast Iron, Tungsten and Materials with High Silicon Content