M35 Cobalt TiAlN Coated Step Drill Bit 1/4" Hex Shank HSS Metal Drilling Hole Opener For Stainless Steel 4-12/4-22/5-23/4-32mm

M35 Cobalt TiAlN Coated Step Drill Bit 1/4" Hex Shank HSS Metal Drilling Hole Opener For Stainless Steel 4-12/4-22/5-23/4-32mm

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