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170 Piece HSS Roll Edged Black Drill Bits Set; Made of the high-speed steel; Hot roll-edged flute with special heat treatment gives additional toughness with increased durability of the drill bit; For drilling steel, cast iron, non-ferrous metal and plastic; High quality and competitive price; You can buy it with confidence from Greetools.
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170 Piece HSS Roll Edged Black Drill Bits Set
Made of the high-speed steel;
Roll-edged rapidly remove spoil for progressive drilling actions;
For drilling steel, cast iron, non-ferrous metal and plastic;
This set contains: each 10pcs of 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0, 6.5, 7.0, 7.5, 8.0mm, and each 5pcs of 8.5, 9.0, 9.5, 10mm.
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