OSG Jobber Length Drill Bit, Series: 220D, Imperial, I Drill - Letter, 0.272 in Drill - Decimal Inch, 3-1/2 in Overall Length, 5XD Cutting Depth, 2 Flutes, Spiral Flute, 2-1/8 in Flute Length, 0.272 in Shank, 118 deg Point, 4-Facet Point, Micro Grain Carbide Cutting Edge, No Through Coolant, Micro Grain Carbide, Uncoated, Applicable Materials: Low, Medium and High Carbon Steel, Alloy Steel, Die Steel, Stainless Steel, Cast Iron, Cast Aluminum, Inconel Nickel Alloy, Titanium and Hardened Steels