Drill Bits 0.3 mm-H.S.S 5% Cobalt

Pack of 10 Our High-Speed Steel drill bits are top quality. The bits used for wood, plastic and metal. hss bits will stay sharp far longer than ordinary carbon tips. They contain 5% cobalt for extra strength Our High-Speed Steel drill bits are top quality.

The bits used for wood, plastic and metal. hss bits will stay sharp far longer than ordinary carbon tips. They contain 5% cobalt for extra strength These drill bits feature a thick core for increased rigidity in hard materials Features accurate positioning and less drilling pressure Thick core for increased rigidity in hard materials Precision engineered parallel shank for accurate hole size Made from HSS . The 5% cobalt formula improves abrasive & heat resistance, for increased strength at higher cutting temperatures How to Use Twist Drill Bits: Ensure the left and right cutting edges of the drill are symmetrical when drilling. Observe the uniformity of the spark while drilling.