Triumph® Jobber Length Drill Bit, General Purpose, Series: T2B, Imperial, #30 Drill - Wire, 0.1285 in Drill - Decimal Inch, 2-3/4 in Overall Length, 1-5/8 in Cutting Depth, 2 Flutes, Spiral Flute, 1-5/8 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