Chicago-Latrobe Taper Length Drill, General Purpose, Series: 120, #40 Drill - Wire, 0.098 in Drill - Decimal, 4-5/8 in Overall Length, 2-1/2 in Depth of Cut, 2 Flute, Spiral Flute, 2-1/2 in Flute Length, 0.098 in Shank, Straight Shank, 1188 Degree Point, Radial Point, Right Hand Cutting Direction, HSS Cutting Edge, HSS, Black Oxide, Applicable Materials: Alloy Steel, Carbon Steel, and Cast Iron