Loboo Idea 10-Pieces/Set Step Drill Bit Kit Including 3PCS HSS Spiral Grooved Drills 4mm to 12mm/20mm/32mm and 6PCS 6.3-20.5mm 90° HSS Countersink Bits and a 5 Inch HSS Center

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Loboo Idea 10-Pieces/Set Step Drill Bit Kit Including 3PCS HSS Spiral Grooved Drills 4mm to 12mm/20mm/32mm and 6PCS 6.3-20.5mm 90° HSS Countersink Bits and a 5 Inch HSS Center