3Pcs Straight Groove Step Drill Bit 4-12mm 4-20mm 4-32mm Titanium Plated Hex Shank Pagoda Drill Drilling Tool Accessory Set

3Pcs Straight Groove Step Drill Bit 4-12mm 4-20mm 4-32mm Titanium Plated Hex Shank Pagoda Drill Drilling Tool Accessory Set

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