10pc HSS-CO Drills Set, 3mm M35 Cobalt Drill Bit Set Twist Drills Bit Set Premium Cobalt Drill Bits Kit for Drilling on Hard Metal, Stainless Steel, Cast Iron(3mm)

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  • 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
  • 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
  • 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

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