10pcs M35 HSS Cobalt Drill Bits Set, 10pc 4mm HSS-CO Drills Set Metric Gold Cobalt Twist Drills Bit Set Cobalt Twist Drill Bits Set for Drilling(4mm)

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  • Wide Range of Application This M35 cobalt drill bit is suitable for most of the electric drills on the market today, and can be widely used for drilling stainless steel plate, automotive spring steel and mould steel, and should pay attention to the speed, pressure and heat control when drilling
  • High Drilling Efficiency The twist drill bit has high surface finish, high grinding accuracy, sharp and durable cutting edges, making them a very efficient professional drill that drills faster and with fewer defects than ordinary drills
  • Set of 10 The package contains 10 pieces of M35 HSS cobalt drill bit to meet your daily needs, ideal for drilling holes in stainless steel, cast iron, sheet metal, steel plate, angle iron, note that it is not applicable to glass or ceramic materials

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