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10pcs/Set 0.5-1.4mm Small PCB Drill Bits Tungsten Steel Drills For Printed Circuit Board CNC Metal Drilling Tools 3.175mm Shank | Lazada PH
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uxcell Micro PCB Drill Bit Set, 1/8" 3.175mm Shank 0.5mm 1mm Tungsten Carbide Tip CNC Engraving Print Circuit Board Drilling Rotary Tool 20pcs - Amazon.com
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