Westward Metal Drill Bit 6PRX9 The TiN coating on these drill bits provides protection against wear and heat when drilling steel, stainless steel, and aluminum. The parabolic flute drill bits are designed with wide, deep flutes to improve chip flow and heat dissipation. As a result, the feed rates do not need to be reduced as the drills move deeper into the workpiece. These bits feature a straight shank for easy installation into a drill chuck or similar tool holder. Drill Bit Size / 3.00 mm Decimal Equivalent / 0.1181 Measurement System / Metric Material - Machining / High Speed Steel Finish - Machining / TiN Drill Bit Point Angle / 135 ° Drill Bit Point Type / Split Point Coolant Fed / Non-Coolant Through Number of Coolant Holes / 0 Flute Type / Parabolic Number of Flutes / 2 Flute Length / 33.00mm Helix Angle / 35° to 45° Cutting Direction / Right Hand Spiral Direction / Right Hand Shank Type - Machining / Straight Shank Length / 28.00 mm Overall Length / 61.00mm Depth:Dia. Ratio / 4xD Drill Length Class / Jobber Length Standards / DIN 338 Aircraft Drill / No Drill Diameter Tolerance / +0.0000 inch/-0.0005 inch Sheeter Drill / No Web Thinning / Thinned Material Grade - Machining / High Performance Primary Material Application / Aluminum and Non-Ferrous Material; Cast Iron; Steel Primary Material Application ISO Code / K; N; P Maximum Drilling Depth / 31/32 inch