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3 Pcs HSS 4241 Straight Flute Conical Umbrella Drill Bit Step Drill Set for Metal Drilling
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New product Nano-blue coating HSS M35 high speed steel step drill bit
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4-32mm straight flute size Titanium HSS step drill bit for metal drilling
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6PCS HSS Titanium Coated Step Drill Bit Set & Automatic Center Punch for metal drilling