Milwaukee® Aircraft Length Drill Bit, 3/8 in Drill - Fraction, 0.375 in Drill - Decimal Inch, 12 in Overall Length, 3-5/8 in Cutting Depth, Parabolic Flute, 3-5/8 in Flute Length, 1/4 in Shank, 3-Flat Shank, 135 deg Point, Split Point, HSS Cutting Edge, HSS, Black Oxide, Applicable Materials: Metal, Plastic and Wood