left hand spiral centre drills winlaw centre drill Yusat 4pcs 1/2/2.5/5mm 60 Degree HSS Center Drill Bits Cente Drills Set 6 * 3 * 2

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  • Can be applicable to iron, steel, dormer drill, copper, aluminum and other processing. Each bit has double end and grinding at standard 60 degree Angle.
  • Standard Drill Each bit has double end and grinding at standard 60 degree angle.
  • dormer drill, WORKING PRINCIPLE When ro ng between the tips, the two end faces of the workpiece receive the corresponding cente bore.
  • High Cutting Efficiency This hss center drill bits has fast cutting and high chip removal rate, centre drill

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