If you routinely drill stainless steel or other tougher metals, these PATIKIL 3mm jobber bits are designed for the job. They’re made from M42 high-speed steel formulated with 8% cobalt for high hardness and wear resistance, and finished with a titanium nitride (TiN) coating to help resist oxidation/corrosion and extend service life.
You can view the current price and full details on Amazon here.
This set includes two 3mm bits with a 135° split point and straight shank, making them a practical size for shop work, maintenance, and detailed fabrication tasks. They’re also suitable for a wide range of materials, including iron, aluminum, copper, plastics, and wood (adjust speed appropriately).
For best results, keep the bit at a 90° angle to the workpiece and slow the drill speed as the material gets harder—this can improve cutting efficiency and help the bit last longer.
2-pack of 3mm (0.12 in ≈ 1/8 in) jobber drill bits; 33mm flute length, 61mm overall length
M42 high-speed steel with 8% cobalt for hardness, wear resistance, and heat resistance in demanding drilling
Titanium nitride (TiN) coated to help resist oxidation/corrosion and extend tool life
135° split point for drilling into harder materials like stainless steel
Works across many materials (stainless steel, iron, aluminum, copper, plastics, and wood) when speed is properly adjusted
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