10pc HSS-CO Drills Set, 3.5mm Metal Drill Bit M35 Cobalt Drill Bit Set Hard Metal Drill Bits Twist Drills Bit Set for Drilling(3.5mm)

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Product description

  • High-quality Material This HSS-CO twist drill is made of high-quality M35 material, containing 5% cobalt, high hardness and stable performance, cobalt steel prolongs cutting edge life and maintains cutting life after regrinding
  • High Drilling Efficiency The twist drill bit has high surface finish, high grinding accuracy, sharp and durable blades, and is a very efficient professional drill bit
  • How It Works 135 degree split point tip starts drilling immediately with less force and eliminates "walking" on the work surface
  • Wide Range of Application This M35 cobalt drill bit can be widely used in drilling of stainless steel plate, automobile spring steel and die steel, with strong practicability

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