4-12/20/32mm HSS Step Cone Drill Bits Hex Shank Nitride Coated for Wood/Metal Hole Cutter Drill Spiral Groove Step Drill Bits

4-12/20/32mm HSS Step Cone Drill Bits Hex Shank Nitride Coated for Wood/Metal Hole Cutter Drill Spiral Groove Step Drill Bits

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