Milwaukee® Jobber Length Twist Drill Bit, 12-Piece, Series: Thunderbolt®, Imperial, 1/16 in Drill - Fraction, 0.0625 in Drill - Decimal Inch, 1-7/8 in Overall Length, 7/8 in Cutting Depth, Parabolic Flute, 7/8 in Flute Length, 1/16 in Shank, Plain/Round Shank, 118 deg Point, Split Point, Right Hand Spiral Cutting Direction, HSS Cutting Edge, HSS, Black Oxide, Applicable Materials: Cast Iron, Steel and Steel Forgings