Chicago-Latrobe - Workman's Length Drill, Series: 150L, Imperial, #11 - Wire, 0.191 in. Drill - Decimal Inches, 3-1/2 in. Overall Length, 5X Depth of Cut, 2 Flute, Left Hand Spiral Flute, 2-5/16 in. Flute Length, 0.191 in. Diameter x 1.1875 in. Length x L Shank, Straight Shank, 118 Degree Point, Radial Point, Left Hand Cutting Direction, HSS Cutting Edge, Coolant, HSS, Bright, Applicable Materials: Alloy Steel, Carbon Steel, and Cast Iron