Chicago-Latrobe - Screw Machine Drill, Heavy Duty, Series: 159-TN/2159, Imperial, #58 - Wire, 0.042 in - Decimal Inch, 1-3/8 in Overall Length, 1/2 in Depth of Cut, 2 Flutes, Right Hand Spiral Flute, 1/2 Flute Length, 0.042 in Diameter x 0.87 in 5 in L Shshshshank, Straight Shank, 135 Degree Point, Parting Point, Right Hand Cutting Direction, HSS Cutting Edge, TiN Coated, Applicable Materials: Alloy Steel, Carbon Steel, Cast Iron and Tool Steel