Irwin® Hex Shank Drill, 1/8 in Drill - Fraction, 0.125 in Drill - Decimal Inch, 3-1/2 in Overall Length, 1-5/8 in Cutting Depth, 1 Flutes, Spiral Flute, 1-5/8 in Flute Length, 1/4 in Shank, 135 deg Point, Split/Self-Centering Point, Right Hand Cutting Direction, HSS Cutting Edge, HSS, Black Oxide, Applicable Materials: Aluminum, Brass, Copper, Wood/Drywall, Sheet Metal, Mild Steel, High Alloy Steel, Stainless Steel, Cast Iron and Plastic