Jobber Drills, HSS Cobalt Jobber Drills
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HSS Cobalt Jobber Drills
● Made of quality HSS M35
● Fully ground flute, high precision, strong self centering ability
● Excellent cutting hardness, wear resistant and toughness under high temperature
● Quenching hardness up to HRC66-67, higher than M2 material
● Use with hand power drills,
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