Cobalt Drill Bit Set 4.2mm - 10pcs, M35 Twist Drill Bits Straight Shank, 4.2mm High Speed Steel Drill Bits for Drilling in Hard Metal, Stainless Steel, Cast Iron

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  • 5% COBALT TWIST DRILL BITS SET Made from M35 Cobalt Steel with Molybdenum and Cobalt added to form a hardened alloy, can measure up to 67 Rockwell hardness, cut faster, last longer, and last longer than normal HSS drill bits 26 times.
  • 10PCS METRIC DIRLL BITS SET The set includes 10pcs of M35 4.2MM cobalt steel twist drill bits. Organized in a sturdy plastic storage case for easy transport to your workplace.
  • SATISFACTION GUARANTEED We stand behind the quality of our product. If you have any problems or are not satisfied with our metric drill bit set, please feel free to contact WildBossy for assistance.
  • VERSATILE USE Our M35 Cobalt High-Speed Steel drill bits are ideal for cutting through hard materials like stainless steel, steel, and cast iron, as well as wood, aluminum alloys, and other metals. Please note that they are not suitable for glass or ceramic materials. Pay attention to speed, pressure, and heat control when drilling.

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