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3mm hss drill bit Key Features: • Premium High-Speed Steel Construction: Made from M2 grade HSS or cobalt-alloyed HSS-E for superior hardness, heat resistance, and long tool life . • Precision Ground Options: HSS-G bits feature precision-ground flutes for excellent concentricity, sharper cutting edges, and accurate hole diameter tolerance to h8 grade . • Multiple Point Angles: Available in 118° standard point for general drilling or 135° split point for self-centering and reduced walking on curved surfaces . • Wide Material Compatibility: Effectively drills through mild steel, alloyed steels, cast iron, stainless steel (cobalt models), aluminum, brass, wood, and plastics . • Various Length Options: Standard jobber length (61mm overall, 33mm working) for general use; long series (130mm) for deep hole applications . • Protective Coatings: Black oxide, bronze oxide, or gold ferrous oxide finishes reduce friction, prevent chip buildup, and enhance corrosion resistance . • No-Slip Shank Designs: Round shank for universal compatibility or 3-flat anti-slip shank for positive grip and elimination of chuck slippage . • No-Walk Tip Technology: Advanced split point geometry on premium models allows easier penetration without center punching . • Available in Multiple Pack Sizes: Choose from single bits, 2-packs, 10-packs, or larger multipacks to match your usage requirements . • Manufactured to International Standards: Compliant with DIN 338, BS328, ISO 235, and ANSI B94.11 specifications for guaranteed quality .