Waheynao HRC55 3mm Shank Diameter Carbide Drill Bits Stainless 2 Flutes 0.76-1.21 38mm Tungsten Steel Twist Drill Bit for Aluminum

Waheynao HRC55 3mm Shank Diameter Carbide Drill Bits Stainless 2 Flutes 0.76-1.21 38mm Tungsten Steel Twist Drill Bit for Aluminum. High Hardness Material: Made of micro grain tungsten carbide with hardness up to HRC 68 and 92.5 HV. Wide Material Compatibility: Suitable for cutting copper, cast iron, carbon steel, stainless steel, and plastics. Super Coating Options: Available with TiSiN, TiAlN, AlTiN, TiCN, or Blue Nano coatings for enhanced performance. Precision Tolerance: Diameter tolerance strictly controlled at +0.0mm / -0.008mm for high accuracy. Optimized Geometry: Features 30-degree helix angle, 140-degree point angle, and coolant hole design. Free Sample Policy: Free samples available for 1-2 pieces upon price confirmation, buyer pays shipping. ISO & SGS Certified: Products meet ISO9001-2008 and SGS quality standards for top quality assurance. Fast Response Time: Price quotes provided within 24 hours of receiving inquiry.