Triumph® Jobber Length Drill Bit, General Purpose, Series: T3B, Imperial, S Drill - Letter, 0.348 in Drill - Decimal Inch, 4-7/8 in Overall Length, 3-1/2 in Cutting Depth, 2 Flutes, Spiral Flute, 3-1/2 in Flute Length, Straight Shank, 118 deg Point, Standard Point, Right Hand Cutting Direction, HSS Cutting Edge, HSS, Black Oxide, Applicable Materials: Cast Iron, Low and Medium Carbon Steel, Stainless and PH Steel