Silver & Deming Style 1/2 Inch Reduced Shank DrillMade from Premium M42 Cobalt MaterialStraw Finish118° Split Point Drill BitsAll Drills are 6 Inches Overall LengthThese Drill Bits have a 3 Inch Flute (cutting) LengthUse M42 Cobalt Drill Bits for More Demanding Applications and Difficult to Drill Materials.