TriNADO® Mechanics Length Drill, Heavy Duty, Series: T1M, 9/64 in Drill - Fraction, 0.1406 in Drill - Decimal Inch, 2-5/8 in Overall Length, 1-9/16 in Cutting Depth, 1-9/16 in Flute Length, 135 deg Point, Split/Self-Centering Point, HSS Cutting Edge, HSS, Black/Bronze Oxide, Applicable Materials: Alloy Steel, Cast Iron, Low and Medium Carbon Steel, High Alloy Steel, Steel, Stainless Steel, PH Steel, Tough, Medium and High Tensile Strength Alloy