The SE 8257HDB #57 10 Piece Twist Drill Bit Set is made of high speed steel. They are a size #57. They are great for drilling ferrous metals, tough casting sand forgings, working hardened stainless steel, and other hard steels and tough high tensile strength nonferrous metals like titanium.
SE is committed to providing the customer with the best source for value possible on the market. You will enjoy the quality, function and usefulness of our SE 8257HDB #57 10 Piece Twist Drill Bit Set.
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