Titan USA Aircraft Extension Drill, Type B, Series: S534, 1/2 in Drill Size - Fraction, 0.5 in Drill Size - Decimal Inch, 12 in Overall Length, 4-1/2 in Cutting Depth, 2 Flutes, Spiral Flute, 4-1/2 in Flute Length, 1/2 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