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Drillco Cutting Tools 500A121 21/64Cobalt Jobber Drill Heavy Duty
Dimensions L x W x H (in.)
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 HSS drills.
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