GARR Jobber Length Drill Bit, High Performance, Series: 1880KH, Imperial, #20 Drill - Wire, 0.161 in Drill - Decimal Inch, 3 in Overall Length, 7XD Cutting Depth, 2 Flutes, Spiral Flute, 1-1/2 in Flute Length, 0.161 in Shank, 140 deg Point, Submicron Grain Solid Carbide Cutting Edge, Yes Through Coolant, Submicron Grain Solid Carbide, TiAlN, Applicable Materials: High Nickel, High Temperature Alloy, Cobalt Based Alloy, Stainless Steel and Tool Steel