Milwaukee® Jobber Length Drill Bit, Series: Thunderbolt® Secure-Grip™, Imperial, 31/64 in Drill - Fraction, 0.4844 in Drill - Decimal Inch, 5-7/8 in Overall Length, 4-3/8 in Cutting Depth, Parabolic Flute, 4-3/8 in Flute Length, 3/8 in Shank, 3-Flat/Reduced Shank, 135 deg Point, Split Point, HSS Cutting Edge, HSS, Black Oxide, Applicable Materials: Metal, Plastic and Wood