Chicago-Latrobe - Workman's Length Drill Bit, General Purpose, Series: 150, Imperial, 27/64" Drill, Fraction, 0.4219" Drill, Decimal Inch, 5-3/8" Overall Length, 5X Depth of Cut, 2 Flute, Right Hand Spiral Flute, 3-15/16" Flute Length, 27/64" Diameter x 1-7/16" Shank, Straight Shank, 118 Degree Point, Radial Point, Right Hand Cutting Direction, HSS Cutting Edge, No Through Coolant, HSS, Black Oxide, Applicable Materials: Carbon Steel and Cast Iron