M35 5% Cobalt Step Drill Bit HSS-Co Cone Hex Shank Metal Drill Tool Hole Cutter 3-12/4-12/4-20/4-22/4-32/4-26/5-21/5-27/6-24mm

M35 5% Cobalt Step Drill Bit HSS-Co Cone Hex Shank Metal Drill Tool Hole Cutter 3-12/4-12/4-20/4-22/4-32/4-26/5-21/5-27/6-24mm

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