Qualtech Aircraft Extension Drill, Economy, Series: DWDA/C, 3/8 in Drill Size - Fraction, 0.375 in Drill Size - Decimal Inch, 12 in Overall Length, 3-5/8 in Cutting Depth, 2 Flutes, 3-5/8 in Flute Length, Round Shank, 135° Point, Split Point, Right Hand Cutting, HSS Cutting Edge, HSS, Black Oxide, Applicable Materials: Mild Steel Qualtech DWDA/CX123/8 Economy Aircraft Extension Drill, 3/8 in Drill - Fraction, 0.375 in Drill - Decimal Inch, 135° Point, HSS