Cobalt Drill Bit Set, 74pc 1.0-8.0mm M35 Cobalt Drill Bit Set High Hardness HSS-CO Combination Tools Twist Drills Bit Stable Performance Durable Long Service Life

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Product description

  • Made of M35 material including cobalt,having high hardness, stable performance.
  • Ideal for drilling on stainless steel, cast iron, sheet metal, steel plate, Angle iron.
  • With high surface finish, high grinding precision , the blade is sharp and durable in use.
  • It is widely used in the drilling of stainless steel plate, automobile spring steel and die steel

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