SGS High Performance Drill, Internal Coolant, Series: Ice-Carb 140, #21 Drill Size - Wire, 0.159 in Drill Size - Decimal Inch, 81 mm Overall Length, 8XD Cutting Depth, 2 Flutes, Spiral Flute, 43 mm Flute Length, 6 mm Shank, Common Normal Shank, 140 deg Point, Self-Centering Point, Right Hand Cutting, Micro Grain Solid Carbide Cutting Edge, Micro Grain Solid Carbide, AlTiN Coated, Applicable Materials: Cast Iron, Steel, Stainless Steel and Titanium