M.A. Ford Twister Hi-Tuff Screw Machine Drill, Series: 205, Imperial, #75 Drill - Wire, 0.021 in Drill - Decimal Inch, 1-1/2 in Overall Length, 3XD Cutting Depth, 2 Flutes, Slow Spiral Flute, 1/4 in Flute Length, 0.021 in Shank, Straight Shank, 135 deg Point, Split Point, Right Hand Cutting Direction, Solid Carbide Cutting Edge, Solid Carbide, Uncoated, Applicable Materials: Alloy Steel, Cast Iron, Ceramic, Hardened Steel, High Temperature Alloy, high Strength Ferrous Metals, Glass, Nickel Based Alloys, Plastic, Stainless Steel, Tool Steel and Titanium