M35 Cobalt HSS Step Drill Bit 4 Spiral Flute 1/8"-1/2" Impact Unibit Stepped Drill Wear-Resistant Tiain Coated 1/4" Shank

M35 Cobalt HSS Step Drill Bit 4 Spiral Flute 1/8"-1/2" Impact Unibit Stepped Drill Wear-Resistant Tiain Coated 1/4" Shank

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