31/64 Cobalt Heavy Duty Jobber Drill Bit (6)
31/64 Cobalt Heavy Duty Jobber Drill Bit (6)
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31/64 Cobalt Heavy Duty Jobber Drill Bit . Heavy duty construction made to Type J aircraft specifications. Used for drilling holes in hard, tough materials such as stainless steel, titanium, high temperature and high strength alloys. High red hardness of cobalt permits speeds 30% greater than standard heavy duty split point (HSS) drills.
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