SGS® Jobber Length Drill Bit, General Purpose, Series: 101, Imperial, #21 Drill - Wire, 0.159 in Drill - Decimal Inch, 2-1/2 in Overall Length, 5XD Cutting Depth, 2 Flutes, Spiral Flute, 1-3/8 in Flute Length, 0.159 in Shank, Straight Shank, 118 deg Point, 4-Facet Point, Right Hand Cutting Direction, Micro Grain Solid Carbide Cutting Edge, No Through Coolant, Micro Grain Solid Carbide, Uncoated, Applicable Materials: Cast Iron, Composites, Hardened Steel, High Temperature Alloy, Non-Ferrous Metals, Plastic, Stainless Steel, Steel and Titanium