Chicago-Latrobe Taper Length Drill, General Purpose, Series: 120, #80 - Wire, 0.0135 in. Drill - Decimal Inches, 1-1/2 in. Overall Length, 5/16 in. Depth of Cut, 2 Flutes, Spiral Flute, 5/16 in. Flute Length, Straight Shank, 118 Deg. Point, Radial Point, Right Hand Cutting Direction, HSS Cutting Edge, HSS, Black Oxide, Applicable Materials: Alloy Steel, Carbon Steel, and Cast Iron