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3-12 4-12 4-20 4-32mm Straight Groove Step Drill Bit HSS Titanium Coated Wood Metal Hole Cutter Core Cone Drilling Tools Set

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3Pcs/Set Metal High Speed Steel Wood Hole Cutter Cone Dril High Quality Titanium Drill Bit Drilling Tools 4-12mm 4-20mm 4-32mm

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