Numbered 1 - 60 Drill Bit Set Cobalt
Tired of always looking for that drill bit you desperately need? Now you can have all of them right at you fingertips. All Index boxes are the highest quality made.
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.
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These are M42.
Numbered and letter drills are actually for the gaps between fractional and metric sizes. A #10 is .193 inch and 4.90mm for example.