Grevosea 13mm Cobalt Drill Bit With Reduced Shank for Hardened Steel, Metal Alloy, Building Engineering and Woodworking DIY Projects

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  • Black and Gold Oxide Finish The surface is treated with black and gold oxide finish, make it corrosion and rust resistant. Also can apply lubricant better for smoother drilling
  • Quality Material This drill bit for stainless steel is made of high speed steel, with high hardness, sharpness and good durability, ideal for drilling in cast iron, stainless steel, hard metal, copper and so on

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