Titan USA Aircraft Extension Drill, Type B, Series: 680, 17/64 in Drill Size - Fraction, 0.2656 in Drill Size - Decimal Inch, 12 in Overall Length, 2-7/8 in Cutting Depth, 2 Flutes, Spiral Flute, 2-7/8 in Flute Length, 17/64 in Shank, Straight Shank, 135 deg Point, Split Point, Right Hand Cutting, HSS Cutting Edge, HSS, Uncoated, Applicable Materials: Steel, Stainless Steel, Cast Iron, Titanium, Nickel, Copper, Aluminum, Magnesium and Synthetic Materials