MARXBORE Jobber Length Drill Bit, Heavy Duty, Series: 334, Metric/Imperial, 12.5 mm Drill - Metric, 0.4921 in Drill - Decimal Inch, 151 mm Overall Length, 101 mm Cutting Depth, Standard Flute, 101 mm Flute Length, 12.5 mm Shank, Straight Shank, 135 deg Point, Split/Self-Centering Point, HSS Cutting Edge, No Through Coolant, HSS, Oxide Treated, Applicable Materials: Alloy Steel, Aluminum Alloy, Cast Iron, Composites, Copper Alloy, Low Carbon Steel, Magnesium Alloy, Medium Carbon Steel, Plastic, Stainless Steel, Titanium Alloy, Tool and Die Steel