GARR Extension Length Drill, High Performance, 1.35 mm Drill Size - Metric, 0.0531 in Drill Size - Decimal Inch, 50 mm Overall Length, 12XD Cutting Depth, 2 Flutes, Spiral Flute, 19 mm Flute Length, 3 mm Shank, 140 deg Point, Solid Submicron Grain Carbide Cutting Edge, Solid Submicron Grain Carbide, TiAlN Coated, Applicable Materials: High Nickel, High Temperature Alloys, Cobalt Based Alloys, Stainless Steel and Tool Steel